I've don't have the cash to work with a HPS (atleast think i don't) i would probably reccommend your choice. Mine is not very light proof, but closetmaid does make models that are. Make sure you look around before buying that will help the most.
Hey, your post got me very intrigued in that ClosetMaid. Does the size seem large enough for a 150HPS because I see its smaller then the original box I was looking at. Easy to keep lightproof etc? THANK YOU!