I suggest you rent it out and earn much more:
http://leaserig.net/index.jsp?t=1Current payment is 0.00035 BTC/GH/day. If you bring in 1.7 GH/s, it will generate you a whooping 0.6 BTC each day

This right here seems very intriguing. What is the upkeep like, and is setup difficult? And do people really want to rent a rig or do you think this is just a fad?