73 318 upgrade questions

Ok so heres the thought...318
I have edelbrock 4 bbl manifold. Holley SA570 4 bbl carb. 904 3 speed 8.25 rr with 3.21 gear.
looking at
New Edelbrok 60779 heads
5901 Hooker Headers dual exhaust with x pipe and magnaflows.
double gear timing
all I need is an idea for good cruisin cam. This is a daily driver but extra umph never hurt