This is a little off-topic but have you taken into consideration that you might not make that much with that rig after ASIC is "fully" deployed?
Meaning you're spending almost $2000 in a system that will give you about 8 BTC a month with current difficulty, therefore you'll be making about U$S240 gross profit (deduct power consumption) and that profit will be declining as ASIC improves the difficulty, not to mention the fact that BTC can go down in price also and your ROI will be longer than a year, if not more...
You might be better off buying $2000 worth of BTC and hoping they go up.
Just saying...