probably isn't a quicker way to start a fight than ask what cam to use
need to decide if you want to spend $600+ to go to a roller...not worth it for this build...
lift - around .450-.460 if you're staying with stock vortecs.
good street manners come from valve timing...for what you want a mild cam with a fair bit of advance is a good pick - I like the CompCams Xtreme Energy 4x4 stuff for cams that work really well in a relatively light truck with a warm engine. I've used the 12-235-2 a bunch, and it works great with stock vortecs. the stock vortec springs are a little light for that cam...but you won't turn it past about 5200 rpm anyway, and they won't float (promise) at that speed.
Just don't buy a high-rpm HP cam for a low rpm torque engine and use...