I don't pay for electricity (legitimate not illegal reason) what would you suggest as an alternative?

Well i currently have asic sha usb chips that i was using on a usb hub but am selling those, my only other peice of mining equipment is the gridseed

my main computer is a macbook pro but i want to run a gridseed 5 chip of a rasberry pi, i'm aware i could do this via minepeon or scrypta but these only use the scrypt mining capacities of the gridseed.
What would you suggest i use in order to mine both algorithms at the same time

Also, as i am using a mac i cannot use windisk32, what is a good sd card writer for mac os.

Thanks in advance for anyone that can help mr noob here.

I have 8 asic antminers (two are the u1's) the rest are the slightly faster red ones. These are only able to mine sha/bitcoin. I am currently running these on a powered usb hub using asteroid on my main macbook pro.  I also have a gold 5 chip gridseed miner that i am running on a macbook air via bfgminer. I seem unable to run both off one laptop. I bought a raspberry pi in the hopes of simplifying things but still not sure inwhich way i would run it.

What would be the most efficient and simple way of running these miners for maximum profitability as currently i am using two different laptops or would i be better off selling the u1 antminers?
Some guidance would be appreciated
thanks in advance