Max Lobe Ramp For Solid Flat

I'd guess you'd need pushrods about 3/4" diameter and ceramic lifters along with 550lbs open if you want to spin that over 5500rpm. Your questions should be to someone with experience with this combo as someone dealing with typical stuff and giving lobe recommendations based off other engine combos will be of no use. Have the heads been on a bench? Post up those details,might help with the other side of this puzzle.