Suggestions for a 318 build

I've been thinking about the next step my 318 (in my sig) will go to and the RHS replacement Magnums seem like a promising upgrade over my 302s. I know with porting and switching to larger valves I could make 302s work great but I don't think all that work would be worth it when low-cost new high-flow iron heads can be had. Then I might reuse the same Voodoo cam with 1.6:1 rockers and zero-deck pistons for 9.5-10:1 comp, along with maybe an Edelbrock RPM intake and some nice headers, of course. In your case you would be able to get a bigger cam in the first place (I need to save $$$), such as the Voodoo 262/268 or any other good modern fast-ramp cam in that range. With the combo I mentioned I think you could probably push 350 HP with still decent bottom end. Bigger cams would make more power but the 318 is small and more "sensitive" to big duration and overlap than say a 360.

EDIT: If what needsaresto says is true then you might actually get better results with a different type of cam...