hey bro whats the temps like up there near anglefire? if your inside temps dont go above 80F then you should be good because adding a 400 hps will bring your closet temps up 7-10 degrees without good ventalation. im in your area but dealing with a little more heat but the 400 is the best because my 2-150 werent enough light....peace from new mexicohttp://boards.cannabis.com/cannabis-pictures/122973-5-weeks-flowering-2-150-hps-new-mexico-closet-grow.html