piston options for s52 crank

Well as it stands I'm going to be building a motor to swap in and boost. Currently have an M54b30 rotating assembly and M50tu head and block. That said I keep debating weather to run the regular m54 pistons and mls, or forged low comp pistons with o rings and if I do which ones to run. And if I do go low comp pistons and rods there is another variable. Keep the 84mm bore or go full 86mm s52 pistons. Seems the m54 pistons are considerably more expensive than the s52 ones so the machining price would make them somewhat equal in cost. I'm not exactly shooting for record numbers here but am unsure just how strong the m54 bits are. Shooting for ~550whp

piston options for s52 crank