3.09 4 Speed Gear Set Strength

If you have a 416streeter, I don't see as how a 2.66 (x3.23= 9.98) first gear should be an issue, unless you just want to parade it. Even still, 4mph with a starter of 9.98, requires an idle speed of 500rpm (27" tires), so good luck with that.
My car has put about 100,000 miles on that Commando gearset, behind a CenterForce clutch and a 367HO cranking over 180psi, with lots and lots of abuse.
IMO;
Run whatcha got, but I highly recommend NOT to run the A833od.