sounds like it would work great :) here is a link to something i kinda did a while ago.
[Project] SilverStoned there is that one when i drilled a hole in the top plastic panel and put the controller through it. worked very well, although it was a small pain to make sure it didnt move.
lets see your rig is the other one. it probably worked better, but was harder to access.
note: the silverstoned work log is pretty interesting if you ever want to paint your case :) i have another painting worklog, i believe it is titled "First Fire". painting, in my opinion, is the best way to make a case truly your own :)