5.7 with hilborn injection

I've seen posts on here about the Hilborn 8 stack EFI on the 5.7 Hemi I have mine on order should be here in the next week or so. MY question is what ignition are you guys running(Holley or Fast) and what size injectors on a stock engine?I was told I can run 36 lb ones. Next question is cams how big can I go without worrying about piston clearance?