Hey joe,
What are ya gonna use as a fan for the dryer hose?
I use the CFL's all the way cause the have warm and cool where I live.
btw, I've read in a few places that the heat from CFL's can equal or top the heat from a HPS at the same wattage. ie:6*26WCFL vs 1*150WHPS.
To be honest, It's kinda hard to control the heat from my 200Watts of CFL. Not the direct heat so much as the total combined heat building up.
so if you can vent the 150WHPS completely you would be in real good shape.