First Dresser

So I've been posting a few threads kinda asking the same questions, now that I've hollowed the dresser it's "Daaamm Rookie!! Back at again wit da questions"

So I might go with setup A using 4 corsair Sp120 cpu fans, (intake+exhaust) a few cfl lights and trying to build a carbon filter. Where should it go?

I planned on using coco, how should I prep it?

And how can I use 3 gal pots and keep the plant from over growing?