Or should I purchase a few AntMiner S1's since electricity isn't an issue?

A bunch of my friends and I pulled our money together to purchase a Bitcoin miner. We are all putting in about 600$ but I myself am only putting in about 275$. Electricity isn't an issue for me because one of my friends agreed to host the rig at his home for no extra charge.

So my question to you all is do you honestly think I will be able to make my money back/turn a tiny profit. I know there are thousands of variables that no one can predict but I just thought this was a good idea to snag a high powered miner with little risk on our parts. Also we have been looking at the Rockminer R3 and the AntMiner S3, not really sure which one to go for. If all goes well, we will just re-invest our money to purchase more miners. Any thoughts on the best strategy to go about this?

Thank you in advance for your help.

-Nesiss