Camshafts, idle quality, driveability and LSA-REAL WORLD EXP and OPINION

Solid was my inclination and I figured the headers might be too small. I can change that.
I have mulled over W2s for heads or maybe IMMs EQ magnums ported.
I could go Eddy but Im not fond of the look on a motor. I like a stock sleeper look... ( I hate to admit Id do something just for cosmetics..)
So if I stay under .600 lift how would you spec out a cam ? Solid roller.....