Will 100amp breaker be enough

I'm building a grow room in my work shop its got its own power meter and has a 100amp breaker panel. I plan on running 8x600w plus fans and heater. would I run into any problems? any ideas what would be a good set up?

Earlier today there was a post, the guy figured 3 400W lights on a single 15A breaker was max. so with 100A, im thinking youll be all set. Id still run lights on separate circuits tho. just as a precaution. Then maybe do fans on another, and air pumps, water pumps on another. A/C or Co2 on another.... Roughly sketching it out how id do it.

if you run on 220v you should be fine

you could put 4 600w lights on a single 30 amp braker easy. run 3-30 amp and a 15 amp seems you would have more then enough power. If you used 220v you would drop your amp usage by about half.