I'm feed up. Time to ask for help!

sledger
Im having a real tough time comparing your combo to the OPs. And I am unwilling to risk catastrophic failure for the sake of less than 1 mph.
So my recommendation to start at 32* stands.

Doogie
I run 87E10 full-load/WOT and 32* @750 altitude, an 3650lbs. Went 93 in the 1/8 on street tune. Just for comparison.
I made 4 runs that one and only time I ran it. Two runs were missed-shifts.There was something wrong with a third run as well. The last run was the only completed run, and so was good enough for me.My only reason for being there was for the timeslip. People were always pestering me to know how fast it was. Personally I didnt care. Thats not what I built it for. Never been back.

Good luck with yours