10k is going to be very blue...and also, remember not to flash your brights when you get them because they take a sec to warm up when you turn them on, and you will burn out the bulb if you turn on an already warm bulb (sounds like it would be worse to turn on a cold one, but its not)...
...from my experience, brands do not matter...
...as far as the heat goes, i wouldn't put all the ballasts near each other, so good luck finding enough places for them to all fit. i'm not saying it can't be done, but good luck...lol
