I've always wanted to get one of those just for curiosity. For everything, not just that.
I bet with my 2 cabs I'm around 800w. Especially counting the humidifier/dehumidifier.
I've got VEG: 5-23w t5's, about 5 dc fans, heater mat/controller, inductor 4" (24/7)
FLWR: 400w HPS digital, vortex...