Make it while you can! The ASIC chips are already changing the game and GPU's will be pointless very soon.
If you're interested in running asic boxes, take a look at
http://launch.avalon-asics.com
Do NOT work with ButterFly Labs--I haven't read a good word about them yet, thats besides the fact that they have STILL not delivered a single box.
We are not far from needing to be in the TH/s range.
Good luck miners!