what cam?

i'm doing some changes over the winter. one of the changes i was going for was heads but a recent '' cash diversion'' has taken place [ from spending on car to spending on sled] but i'm not willing to give up totally. my plan is some tti headers [from beat to **** headman] and x pipe and a cam change. here is my setup

75 dart sport, power brakes,power steering
727 2800 stall
391's
360 .20 over, balanced
smogger [1978] heads with mild pocket porting and 188 valves
750 speed demon
mallory ignition box/ rev limiter
9.5:1
mechanical rockers
crane cam grind# hmv-278-2
intake lift .467 dur-278
ex lift .494 dur-290
looking at the paperwork i have at least .048 before bind
what cam do i want [damn thing idles at 600 rpm and does'nt stall at the lights[crazy eh!]