Setup really depends on your position rather than the body or rifle itself.
I set up the rifle without a cheekpiece, so it's naturally pointing level in the sitting position, getting the butt plate right. Then I put the cheekpiece in position so my head rests naturally without cranking over. Then I put the scope to the height which matches that. I use risers to make up the height then have a rail made to match.
For kneeling and standing you will probably find a rifle needs to be refitted to be optimum, which means you either need a stock that adapts or accept a compromise on those positions. 3 position shooters change everything for prone, kneeling and standing. The limiting factor for us is not being able to move the scope around for each position.
BFTA/NSRA County Coach
CSFTA Chairman/BFTA Rep