Well my main piece of advice that I am looking for is if I put down 2,500 for a bit coin miner at 50 GH/S will it be profitable at all in the next 3 or 4 months? Then I could just buy a bigger miner.
If you had it "in hand" and mining right now, then maybe that would be possible. However, the difficulty increases make it hard to do an exact calculation.
In my opinion, yes, you could make money, albeit not very much.
Have you considered preordering some hardware that is due early next year?
For
the same 3527$ you could have 1Th/s.
http://www.blackarrowsoftware.com/store/prospero-x-1.html?sl=en