RPM shifting
I thought about what I said about just using your right foot for now to adjust starting line rpm. I made the assumption that your tach was in a line of site. I shouldn't "ASSume"....lol.
If you use a starting line chip/limiter, do like Scott says and start about 2000. If no bog, then make a few passes there and move up 500 at a time making a few runs at each setting until you start blowing the tires off.
Also, a "slight amount" of spin at the hit will not necessarily slow your et's and would be a little easier on the drivetrain.