hi
1: quite hot, hav a fan blowing on the bulb
2:possibly but you will still need a fan in there and keep door open abit during lights on.
3:dont know
4: as many as you can fit in 1 msq, 4-6 imo.
5:dont know as im from uk, different prices.
hi
dont go off the color of hairs, you need to look at the trichromes with a microscope.
if they are clear, leave it a bit longer. you want them turning amber.