First Engine Build

I checked with Lunati today and they said that the Voodoo 268 would be a good grind for me. The cylinder heads would require additional machining to accommodate dual springs.
The Comp cam tech felt that the EX268 would be too much cam for my build and recommended the EX262. No additional head machining would nee to be done for the single coil valve springs.
I have a nice set of 273 rocker arms that I was intending to use on this build Will they be adequate for my set-up?