Hello

I have done a good bit of research and have noticed that GPU mining will soon be obsolete as CPU mining is because of FGPA and especially ASIC rigs.

I would like to take advantage of the free power I have so I am looking to start mining.

My question is where I could purchase an ASIC rig and whether or not an FGPA rig would be worth purchasing at this point.  Most of the sources I have seen only offer preorder services and I'm skeptical about butterflylabs. 

If preordering is my only option, what do you suggest I take a look at?

Also, if none of the above would be the approach I should take to maximize profits, please feel free to make any suggestions.

Thanks!