if its around 80-82F you should be ok on temp man. But if your worried about it give it some CO2.
I watched a grow video that suggested spraying the plant with carbonated water. So I tried it and it seems to be doing well. looks more resilient.
I just but a 2 liter bottle of Carbonated water from the grocery store, put it in a spray bottle, and i spray the leaves everyday with it. been doing it about a week.
also, SInce we have similar set ups I'll let you know my specs.
I got 3 cardboard boxes 18"widex18"longx21"tall (this is when they are in use as boxes with flaps on top.
I turned them on their sides so flaps face out, and cut them and taped them to make a small little closet. lined it with duct tape and mylar.
its about 1.5'x2'x4'tall. 1 comp fan intake, near bottom, 1 out take near top, and 1 like 8 inch osilating fan in side for circulation by plant.
i have 6 26watt 6500K CFLs right now for veg, and I'm guna use 4 40Watt 2500K CFLs for buding. maybe more than that not sure yet.
I just have a single plant so i dont need as much light as you got.