Sorry to burst the bubble, but mining is business.  Right now on LTC ~28M will give you between $1000-$1200 per month, so a more conservative estimate would be $8-1000 considering the Zeus stuff is about to stumble out to the market, so getting any A2 right now is worth its weight in gold.  It'll ROI in 4 months if you are lucky, 6 months otherwise, since scrypt is more wide open than BTC for where you can point hashing and still make bank.