I burned 2 #3's up on my old S/C'd 440. cast speed pros. My fault both times for not turning on the electric pump. Once on a joy ride and once at the 1000 foot mark. Was well on the way to an 11 second pass and the car shimmied and cut off. Still went 12.19. I blame the Mustang in front of me for spitting an axel and making us back up and wait.
As far as jetting, I suggest you buy the Snow Performace Kit. Stage one will probably work. Right now I have the 600hp jet in mine. Don't worry about distro with the blower. Mine is plumbed under the primary only and it seems to hit all 8 just fine. You might even call and ask them if the sell jets seperate.