you have a decent amount of lights but once all of those plants get bigger you will probably need to add more..im not really diggin the cardboard walls though. go to any thrift store and you can find a cheap dresser or cabinet perfect for a grow box.. what are the temps. in that cardboard...
what did you use to connect pc fans wires to outlet?? alot of people on here use old cell phone chargers and they work awesome.. all chargers and plug in's to outlets have different voltage compacity labeled right on the back of the plug in.. the higher the voltage=fans getting more power wich...
put your halogen light aside and go out and buy some 6500K CFL's .. if your only growing one plant then you dont need many CFL's for vegetation.. how big to you want your plant to be.. how much space do you have to work with??..post pics
depends how cold it is up there man..i did a cfl grow in my attic once(mines also freezing) and the lights kept it at a decent temperature..but when it was time for them to get some sleep the temps dropped...my box had quite a few lights though and from my experience, you cant fit many lights in...