Cams...too many dang choices!

OK,

Everybody has been here I'm sure, a short block rests quietly, all parts and gaskets gathered except.....the cam! Most everything comes from the donor 440, actually everything did come from the 440 whose block decided to start weeping antifreeze for no dang good reason...ugh.

I'm used to hearing it idle in the kind of way that made my Mother-in-Law raise her eyebrows and yell...."are you planning on driving that thing on the street?"

So I have the cam that cam out of the engine but its looking a little worn so I'm thinking, now is the logical time right.

Its a 324/324, Lift .620/.620 Purple Camshaft (mechanical).
I like the radical idle of it and would like to stay radical but bring more low end on board.

Do you educated mopar people know of such a cam?

Im running 3.91 gears with a 3000 stall converter, yep...with that cam! Tricky? you bet. But if have not experienced anything else you dont know how bad you have it or what your missing.

Here's the rest on the car to help you think it through:

1969 Dodge Dart
RPM 84cc heads with Harland Sharp 1.6 Roller Rockers and a little port work
30 over 440, decked to zero, balanced, blueprinted.
Mopar high rise single plane intake
Holley DP 850
Headers

Id like 2800-? on the cam, not sure how lift plays into things either.

How about a little education because I'm sure others have hit this wall too.