NICE! youll love HPS no more moving bulbs around, your setup will look way more professional, and your nugs will get even denser. My roommate up stairs has a closet that about 3.5' x 5' and has TWO 400w hps in there and i put my light meter in there and even 4-5 feet away, the needle was topped out on BRIGHT ( LOL yes i have a shitty light meter that was a scale of Dark - BRIGHT, and yes bright is in all caps) The heat right now isnt an issue at all, its getting winter here and outside temps never go above 60 anymore(just gettin colder too) so hes got a 6" tube bringing cool air in from the outside and it stays 75* all day and gets down to 60 at night, he gana put a heater in there to keep it above 60 as its getting colder. You might have to look at bringing cool air in or venting out the hot air ( Could use it to heat your room?). Decided on the magnetic ballast huh? Make sure you have a good spot as far away from your bed, the buzzing is a little on the annoying side when they first come on, after an hour the get a little quieter. I just picked up a 1000w, hood, bulb, ballast, and a shitty light moving rail off craigslist for......... 100 BUCKS! lol i drove away from his house so happy! some old guy that just doesn't grow anymore, he told me his son does now and is way better lol! Anyway enough rambling for me cant wait to see the Update when theres a nice HPS in there! I would guess 5 days for shipping excluding weekends maybe sooner depending on were their main warehouse is and you are. You'll probably wana try and find a MH conversion bulb for CHEAP that'll keep that tight node spacing when your vegging, or just use 6500k CFL's for vegging, you obviously know what your doing and the CFL end of things lol.