Help On Growing

I have no idea if this is the right spot to be posting but, Im looking forward into my first grow, i have a 300watt led growlight, sits 16inches away from top of the soil. I have a 4inch carbon filter with a 190cfm fan at the top of the box and 2x 120mm computerfans as imput, Growing sour diesel from seed, I plan on Vegging till there about 8-10 inches then adding a scrog type of setup(got to do more research into this. Im thinking about adding a ceramic heat emitter to keep it about 76F. Can i Get any advice on this setup. The box is 24inches tall/18deep/20wide.