Ahahaha so is the burden of growing alone, my friend! I've been in similar situations many a time. Before you risk your ass on a big grow, think about it... Imagine all the problems you ran into in a closet, now imagine that in a space 12x the size. Holy shit. Lol. Start with a 10x10 or 5x10 first. I know I would blow a gasket trying to run into a 30x30 garden. You need ample air conditioning when using multiple 1000w's, don't pick them up without a 15,000+ btu a/c unit.
Besides... I want to see pictures of your next grow, god damnit! But for real, you should kick me down a 1k light