i need some serious help with my growbox=)1st time grower..

i didnt start building yet ,but heres the plan,just wanna check tht would that work out..
i gonna build it 40x40x55inches..and i gonna use laminate flooring do to tht.
then i gonna paint it white inside(or silver)dont know whats de best..
for the vent i wanna use 40mm pipes what gonna run a circle around the box 10 inches from the ground..it will(should work cos i gonna drill louds of 10 mm holes in the pipes and connect 4inch shower fan behind them)
and for lightning 125 or 150w CFL.what eva would be the best..
and also i would like to know how many plants would that hold,1, 2,3...
please leave me any omments what would help,cos i really dont know much bout growing XD..
thnx a lot mates cheers...