I used the Mancini rocker arms on a 700 hp big block with 0.700 lift. So my testing was with a camshaft that is much more aggressive than what the OP is planning to use. The Mancini rocker arms worked just fine in that application so I'd think they would work fine for the OP.

https://www.hotrod.com/articles/trying-find-extra-power-rocker-arm-testing/