cam advice for 340 street motor

Hi I'm looking at cams for a 340 I'm building for my 72 duster. Will have 323 gears and I'm willing to put a 2500 or so stall in when the motor is out. I don't want a crazy race car idle but i would like a nice lope to it but something still drivable. Does not have power brakes i put Kelsey hayes 4 pistons in the front. Motor is a 69 340 bored 40 over and i have 1970 U heads with 2.02 intakes just gonna have gone through maybe port match the intake. Suggestions?