@Hooter. Yes 1 Amare 250 ~300watt LED. Not sure how to gauge if the light was too big. I can tell you it fits nicely in the tent and temps never went above 82 in a temp controlled room of around 71. I think they target this ligh at 3x3 though, which wil probably be my next upgrade> I'm growing two bluecheese girls in 5 gallon pots using "nugbuckets mainlining" technique. Doing very well but will probably be crowded once flowering starts in earnest.
For the humidfier, I left it enabled and hooked up to my auto-humidifer controller. Looking at the chart, it didn't go on much during flower, except when the soil got a bit dry when I was on vacation.