With 3.91s, you should tell a difference with the timing all in earlier than 3,000. With those gears, I typically shoot for all in by 2,000 as long as it doesn't ping in high gear when cruising.

Does anyone else feel that the 1.80 60' is too soft? 1.60 should be a reasonable target that a street car could achieve. That alone should put the car nearly half way to the desired goal. And the only way to get there is to experiment, experiment, experiment. A Go Pro to shoot the rear at launch can be a lot of help to see what is happening.