Theres not much more clearance really, so stretch may be an issue.
Like diggity said you may have over done it.
Heres a 4x8 i filled out under a 1k (4x6 really since i had fans and an ac like yours in there)
I see you have an air cooled hood, i went as close as 8 inches under the hood with only...
You have a nice sized room, but i think you may have over vegged a bit.
Itll be hard for you to walk around though to manage everything..
Nice work by the way
So these are the girls
Happy frog soil
2 gal pots
Ro water with calmag upto 150 ppm ph 6.3-6.7
Day 32
Light is mars hydro ts1000
24/0 schedule in a 2x2
Dimmed to about 40% at 12 inches
( lost my ppf meter so going by manafactures specs, im calculating about 400-500 ppf at said height and...