2 solid lifters for small block

How are you going to accomplish this? Solid and hydraulic lifters are different heights and require different types and lengths of pushrods and rocker arms. You won't be able to turn the engine through a revolution to get the correct measurement.
I was going to use my current hydraulic lifters until I learned you can’t use them to check P2V, since they compress and wouldn’t give an accurate measurement. I was told I needed to use solid lifters to check P2V.