what cam for this engine?

Hey all, we are putting together a 360. its a fairly low budget build. anyways its a .030 over 360
h405cp pistons, figure 8.5 to 1 compression
915 j heads 1.88 1.60 valve with some pocket porting and good valve job.
performer rpm intake, holley 600
1 5/8 headers 2.5 dual exhaust
the car (early a body) has 3.91 gears and a 2500 stall converter.
He is trying to figure out a good cam for this engine
I was thinking a voodoo 268 might be good or the comp xe268.
he would like it to be lopey but nothing crazy.

He also wanted to know what difference in power he would might see by going to a h116cp piston? It looks to bump the compression up almost another point.