150w hps would be good for one plant but with a pc grow your going to have heat issues .... With cfl's you could drop in 4 27true watters in there and it would be alot cooler but not get the results the hps would produce .... I've seen some lowrider scrog grow in pc cases that look great ..... Good luck
dude i think u got the pc planter from sunlight sheds nice but u should have got the cool cab i have a friend who has the cool cab and he pushes 22 pounds of the most top quality dank u can get