60 extra cubes eats up a lot of camshaft duration. You're way under on duration and lift both, even for a conservative application.
I built a 482 for a 65 F250 where the guy pulls a 10000 lb travel trailer and it has more camshaft than that.
FEs are harder to cam for than traditional engines and you can't rely on cam tech lines, catalogs, or guys that build Chevys to nail one down.