Starting Shift Point

More info:
It’s a street/strip car that will see very little street.
I got the entire driveline out of a wrecked D150 Pro Street truck.
When I installed the cam, it was at 108, so I left it alone.
It’s a 727 w/ roughly a 32-3500 converter. (I just started driving it, so I can check closer.)
The tires are M/T ET Street Radials. 235-60. They’re about 26” tall.
The gear is 4.11 (9”). I may be changing that; it has a pretty bad howl.
As a street car, I don’t think it’ll see the perfect stall and rear ratio.
All in a 71 Duster clone. It’s pretty light. Fiberglass hood, fenders and bumpers. No back seat, light weight fronts, Prostars, skinnies.
I guess what the cam will pull to is my main question.