Roller Rocker

if i buy this cam and these roller rocker arms, what will my effective lift be for intake and exhaust?

Cam=http://store.summitracing.com/partdetail.asp?part=SUM-K1105

RR= http://store.summitracing.com/partdetail.asp?part=SUM%2D141507&autoview=sku

I am trying to do a low buck build on a gen1 sbc 327 with Summit vortec heads that say they can handle a maximum of .520 lift..

Will these other parts work?
Vortec heads= http://store.summitracing.com/partdetail.asp?part=SUM-151124

If [...]