Yes. It has been a time that DCR shows better profitability.

Start with nicehash, you could try specific miners for each coins later.
Nicehash charges little bit high fees.

Mostly it's the problem of windows version, but you are not in the case.
Check PSU and riser cards. Or isn't that result of throttling from very high temp.?

It's realtime profitability could have some errors, but 24hr average is quite accurate.
There's not many sites that show better results than whattimine.

It's still good mining rig for ethereum. It must be profitable.

It seems quite appropriate hashrate for 1070. You can trust nicehash profitability.

Biostar TB250-BTC is one of the best.

It's case by case. Mobos with same PCIe slot number have different compatibility with PCIe extension cards.
You should find other people using it with your mobo model before purchasing it.

Thanks. Good luck!

6000 shares and 40+ rejected seems <1% shares are rejected, commonly that's acceptable.
For better result, you should check OC set, internet connection and power supply status.

As other said, your budget is not sufficient for typical mining rigs like 6way gtx1060.
For cost effectiveness, you could try 6-8 way 750ti to minie XMR. It's the best option for you to make maximum profit under your budget.
But I recommend to start with 2-3 1060 or RX580 and gradually add GPUs as you can afford it.

DCR is one of the coin that many miners prefer with dual mining.
LBRY also seems OK.
I recommend you to calculate on the sites like whattomine.com with actual hashrate you got on claymore.

Let's do some math.
Blocktime decreased from 30s to 15s.
Block reward decreased from 5eth to 3eth.
Profitability ratio = (3eth/15s)/(5eth/30s) = 1.2

Theoretically there should be 20% profitability increase.

It's first time to see vertical case. Looks good.

It's just a hot air unless some chemicals evaporate from mining rig chassis.

It shows quite long ROI, compared to other mining cards like 1060 or rx580, but it shows good hashrate on Zcash minng and some core-bound algorithms.

With OC and power setting, many people make 720+ sol/s with 1080ti.
For more outcome, they try optimizing OC setting, trading and algo-profit switching.
Try these things, good luck.

Your mining rig spec is appropriate for mining ethereum.
Always check profitability comparing sites like whattomine.com.
Many shops are starting to support paying with cryptocurrency, but I think it will take a long time for it comes into our lives.
There are some youtube videos like 'Living only with bitcoin for 1 week', you could watch it.
Good luck.

If you are going to invest for about 1 year, buy.
For more than 2 years, mine.

Sure, you can mine on other pools by modifying .bat files.
You must set TargetCoin when you use other pools.

Here's an example for flypool.