Did I over cam my 408 for the street?

Im having a 408 built for my duster. Specs are:
408 cast kit, dished pistons, 10:1, edelbrock heads, hydraulic flat tappet 240 245 @ .050 on a 112lsa. RPM air gap, holley 750. This is going into a full weight street car with 3.55 gears and a 2500 converter.

I was hoping for a strong good sounding idle that wasn't a bear to tune. Thoughts? Thanks