New Hydro Grower seeks Critisizm of set up

Yo! Whut up to all my fellow carnissours!! I can't spell, but that another thread. I'm looking for some constructive critisizim regarding my new hydro set up. I'm looking for experienced hydro growers to point out deficiences in the set up. Any help at all would be greatly appreciated. Here it goes....

(2) Grow closets (not Connected) measuring 48"W x 48"L x 8'H
-DWC hydro 8 plants per, Scrog method
-(1) squirlcage 120cfm fan at bottom of closet
-(1) in-line 4" exhaust fan at top of closet
-(1) 400 watt HPS
- Feminized PPP indica/sativa (1) closet
- feminized Snow White indica/sativa (1) closet.

now.....

I plan to take cuttings from both grows and transplant them into a...

(1) converted dresser into clone closet measuring 36"w x 24"D x 6' high
-DWC hydro (12) clones total, SOG method
-(1) in-line 4" exhaust fan at top of closet
-(1) squirlcage 120cfm fan at bottom of closet
-(1) 400 watt HPS


THoughts? Problems? ADD/Subtract?

Thanks to all in advance...

Rule 1, GROW ALONE.
#2, DO SOMETHING to rpevent spider mites. I use Lowes HomeGuard, and spray the perimeter and corners of my closet. Some growers here argue agaisnt it, but I do NOT wnat spider mites to destroy my grow and that neem oil solution does not always work.