valve stem height - need some help

Why would you go solid? If it's to keep from correcting stem heights, I don't recommend it. The whole purpose of hot rodding is to get more power. In doing that, tolerances and clearances are changed and usually tightened to more stringent specifications from what the factory allowed. Unless you correct the stem heights and get them all even and in spec, you're backing up, especially after purchasing aluminum heads. It's just not "that" difficult to do. If they were mine, I would verify what it likely is.......the seats or valves or both need touching just a bit more. Then take my findings to the machine shop and let them correct it. Won't cost much and your heads will be correct, instead of not correct. Then you can run hydraulic.......even though I still would recommend solid. LOL