Total Timing?

I think with the package you have, a more conservative launch might be better. You need to look into the spring combination in the distributor too. My guess is peak torque is happening around 3500. So I wouldn't launch over that. I also think the 750's too much. The engine will be done making decent power after about 6K. You don't need more than 650cfm for that. I'm sure if it's a custom shop carb it flows more than 750. If it was sitting in my driveway, I'd be looking to run a 4150 series 650cfm carb, running around 18° initial, the bushing to give it another 20°, and the springs to get the curve in around 2800. I'd recommend you shifting at no higher than 5500 in first and second, and 6K in 3rd and 4th. I think these as a starting point might be good. The car seems very slow off the line and I think that's the carb more than anything else.