first 400watt grow

I went out yesterday and bought a Sunburst 400watt digital ballast/reflector hood, so today i set up my 4 week old plants (2nd week of veg for the bushy one on the left 1st week vegging for the other 3) i've ordered a grow tent 3x3x6 tent (actual dimension say to give 6 inches so around 3.5 to exact)

(Far left plant is a bagseed, the 2 in the middle are NL#5 same strain as my first grow the farthest one right is a purple bagseed bud i got so ima try em out.)

I understand that the ballast hood combo adds alot of heat, but atm under the light its 80 degrees perefctly, i added a fan to help circulate but until i get my grow tent (back ordered) this set up will do just fine.

Any comments or suggestions would be greatly appreciated.

nice setup. subd.

update im a little concerned with the browning of the bottom fan leaves on the largest of the bunch, (pic #2) should i begin to prune the plant if so, can anyone tell me how to prune em? most of these plants are gooing to be moved to an outdoors location soon, but i plan to mother one of the NL under the 400 watt when i get my grow tent, things are looking up!