08 Screaming Springer,
I don't understand the rationale to go to stage 4 headwork / big money not cheap then throw a mediocre cam in the middle of it. If your building it for a purpose than match the cam to the heads / intake / piston and associated parts.
I know your looking for information, but I think you are going about this build maybe a bit backwards, in that the head guy should already know your riding style so he can mate your style to a cam / his headwork that will accomplish your end goals. Fishing for combinations is fine, but expect that you will be trying other cam's and there could be reprocussions from the one off build. The head builder may setup your heads to work with Cam A that he suggests, but be aware that might not work with cam B because of valve to valve clearance or spring heights, compression or whatever the reason. I think you should step back and ask your head guy to give you a combination that is something he can show you dyno sheets and references from before you jump in and just pay the money and are disappointed after the fact.