valve stem height - need some help

Oh well....... I tried.
There's a big picture here and it's the Op wanting 50lb off the front of his car.. (mind you that he doesn't own yet LOL)
Now he's unconfident in these heads and finding out he can't just use his stock stamp rockers.. and might as well get a solid cam since he has adjustable rockers and down the rabbit hole he's going.. all the while claiming not to want a drag car or anything like that.. so compounding that with a custom valve job to even all that out is just probably where the overwhelming part begins and again remember this car does not even exist at least in his possession...