Solid roller spring suggestions please

[ProPower engines]

Without the rocker ratio, no one can make an intelligent recommendation.
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1.5 ratio on intake and exhaust. Mike, also would you take a stab at what a safe valve lash would be? Thanks
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Since there's no way to know how aggressive the lobe profiles are, I would go with the ISKY 9935 springs without the rev-kit, or the ISKY 9915 springs installed at 1.950" with the rev-kit.

Without knowing the lobe profiles, there's no way of knowing what the correct lash is.
I would start with a Hot Lash on .015" to run it in. Then you want to increase the lash in .002" increments, until it gets noisy or hurts the power.
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I am with Mike on that but I would use the rev kit. No sense putting extra seat load on the valves and seats if not needed.