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I will just make the suggestion here without even going into all the above, look into sub-leasing colo space and or at minimum a Class A facilities. Factoring Triple Net cost on a building that your hosting customer equipment in requires all the above regardless of how "dense" you may think it is. Otherwise you are just risking pissing off customers because when you relying on "building facility" air they decide to shut it off after hours , or during the winter times they crank up the heat and half your asic's are shutting down because of it.

Lets say you take over a whole floor, I would assume without knowing the local market you would be looking at ballparking it 20k a month just for lease space, not counting triple net. You will then have your buildout cost approx 250k-500k depending on how you negotiate the lease, and assuming the building is up for it also at min a 3 yr lease. So your capex upfront just on space is about 750k plus your buildout cost and or operating equipment, upstream providers, hardware etc etc. I would easily see this being a 2-3mm startup cost adjusted over a 3 yr period, thats on the cheap.

So focus on what your MVP model will be, your fastest to market to start getting customers and scale up from there to prove the model before you jump feet first into what seems to be a foreign market to you. If you go the colo sub-lease route you will save you infrastructure cost and cut your capex down to a pretty manageable MRC cost that you can factor what your customer acquisition cost will be in the long run.

Security systems installed into what, how does that change the fact that you will possibly have machines generating 10k+ dollars on them and there is a plate glass window at ladder height?

Also as far as energy consumption, re my too long post it will help you out with understanding the basics of a very minimal redundancy aspect when it comes to providing a hosting facility.

This can all be accomplished but your going from one aspect of generating bitcoins, to the aspect of customers relying on you who are paying for a service and you have to cover all basis contractually.

Feel free to ping me offline, ill put you in touch with a few resources if your serious about moving forward at least to steer you in the right direction so you dont sink a bunch of time and money into something.

So your not serious about this then I'm assuming, this post while "long" are serious factors to consider when venturing down this road...just attempting to pass on some vetted knowledge to you for free to help out..

Ill summarize, to prevent you from having to actually read it..

Building not suited for any high density Environment
Environmental concerns for cooling and humidity
Physical Access Security major concern
Power requirements for high density environment need to be factored in
Routing and Upstream Provider Considerations from a very high level

There ya go!

So little devils advocate here, been involved in quite a handful of DC and higher end server environment build-outs so while do consider this an interesting ideas there are some ideas you need to cross.

First with this location how are you going to provide secure access to the environment, a full glass building is far from ideal from several reasons. One being ease of access from the outside which unfortunately allows for a lower classification on security. While you could offset that by building internal secure access areas you then are faced with the natural disaster scenario and what it can/cannot withstand. While Florida is not prone to acts of god, hurricanes and building classifications Im sure are more prominentS.

Second, building power and feeds to be classified as any sort of redundancy you need two physical lines of power from two different hard line runs from two separate power plants. Often times with larger buildings these are readily available but considering while this may start small you have to take into account the fact that even 30 min of downtime regarding power since these are in-production money producing machines is only tolerable to a certain extent.

Third, cooling requirements again this plays into the first part and why glass buildings are not usually used for any sort of high density server environment. Unless separating physically the location of the infrastructure from the rest of the building simply using built space will prove very difficult to cool, also without dedicated cooling and relying on building cooling you risk the ability of shortening the lifespan of these machines. While this is not always the case, I would assume if you are employing asic mining as well these machines will run at close to if not over capacity thus environmental variables much more sensitive. To also compensate and adjust for this humidity in florida, probably the second worse aspect of environmental concerns over water.

Lastly, building concurrency in line with multi-access routing and I am assuming not solo-mining you will of course need to take into consideration applying multiple link points again through various means of access to your upstream providers. Along with this I would also take the separate measures of applying for some space of your own from ARIN as to allow for portability between providers. Last think you want to deal with is a bunch of BGP flapping between providers because you are not the authority on the IP space, also please consider MPLS when deploying these lines.

Just a few devils advocate observations, looks like a fun project either way just dont sell yourself short on thinking this all out as it grows.

Have played around with this myself, something that I find pretty lacking out there personally there is multiminer as well which is a great app but for headless installations proves a bit difficult and is still windows/mono.

As for assigning multiple bfgminers I am not sure but I am pretty certain you can assign different "hardware" devices to mine specific pools/coins as that option is present in multiminer.

Setting up a good php or node interface to interact with the miners is something on my short list as well!

Let me know when you get a chance to read PM, know your super busy!

Pm Sent Im in for two...thanks again!

GPU is still very relevant to alt-coin/scrypt based mining...unfortunately its ran its course for sha-256 coins and of course "cpu only" coins that up until now are pretty resistant.

BTC and LTC have different starting address for a reason, so the the block will reject it as being invalid and not accept it. You will have to contact whoever directly as most of the time they will have to manually process it but it is not lost.