When the head work is done, the machine shop of choice should test the valve springs and recommend any replacement.
"cracking" of the rocker arms due to excessive spring pressure? Not hardly!
Again, unless you are spending thousands of bucks in a complete re-design of this engine (resulting in a non-streetable application), there is no way to over-rev one of these motors, even with all the typical performance mods. Fresh oem-grade valve springs are an excellent choice if a replacement is needed. You are talking about an engine that will struggle to see 5000rpm.
If the machine shop doing the head is knowledgeable in performance valve train work, then they will know what to do regarding valve seat spring pressure and how to verify/correct.