Dude i got a way similar set up ill have to post it up when i can. its pretty stealth in a desk cab like yours. i think iv got 3 cubic feet. maby 1 x 1.5 x 2 and i got 4 26 w cfl. my temps are killing me tho and iv set up a 4 in. home depot inline fan. watch your temps forsure and have a good fan blowing.

i think id start with 3 seeds and hope for females and maby try and lst 2 of them in that space. iv considered 2 8" square pots and trying to keep them tied downn as much as possible.