Some 5.9 roller cam help from y'all please

Lift is GOOD!!!

Run something in the 210ish range and 500-520 lift and cut it on a 108-110 LSA. No need for a wider LSA on such a short duration camshaft. It's going to idle fine. The stock 1.6 rocker ratio works well here.

You already have a valve spring that will hold up. No crazy parts required.