I like it it's good but the only thing I noticed is the price and the speed, you were able to make a 3Gh/s mining rig that costs $2,116. In my opinion, it's better if you could have used it to buy three 5Gh/s and one 25Gh/s mining rig from ButterflyLabs:
 
5Gh/s: 3 x $274 = $822
25Gh/s: 1 x $1,249 = $1,249
Total: $2,071
 
You could mine a lot of bitcoins from these four. But anyway this is just my opinion. I hope I was able to help you. You can post a reply if you need more help.