here's a couple links to threads by FreezerBoy, a guy who runs a really
nice little SCROG, in DWC, inside an old freezer.

250w Freezer grow THaze x Skunk

DESTROYER on Ice - 250CMH Freezer Grow

and here's a couple pics to show what i mean.

if you're still lookin' for help, this guy's threads are well worth the read!