Carburetor cfm for a mild 318 build

Bewy said

The OP has not given the cam specs, only that it is mild. That means the volumetric efficiency of the engine will be low-ish.....
The VE is highest at the peak TQ rpm, which will be well below the theoretical max 5500 rpm of the intake. VE at 5500 might only be 80%, compared to 85% at peak tq. That equates to about 520 cfm for 318 cubes @ 5500. Better to err on the small side.

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I'm thinking about using a comp xe262h cam. Would like a little rumble at the pipes. Compression ratio around 9.25:1. Speedmaster cylinder heads ( bare). 1.88" intake / 1.600" exhaust valve's. Edelbrock performer intake, edelbrock 600 cfm carburetor. Gear ratio I don't know what would work with my planned combination. I haven't bought anything yet. Is this a good choice of parts for what I'm wanting to do with the car? I'm not looking for a lot of power but still I want it to be able to get out of its own way. Wouldn't throttle response and low to midrange torque be best for a cruiser?