1000W = 3 PCs. Kinda borderline in a small or older 2 bedroom. If it's a newer complex it'd be ok. (I think) Personally, I'd go 600 instead of 1000. But if the 1000W is already bought & paid for...

Also, one thing they look for is a large (1kW+)(?) pull on very regular 12/12 cycles in residential services. If you "flip-flop" the ballast (2 bud rooms: run one bulb while the other one's off) there's no fluctuation, and less suspicous. You would also get much more production with 2x600W than with 1x1000W.