It sounds like you know your stuff, but if you want to bounce anything off me, feel free to message me. I have a LOT of experience with 1:1. Again, best wishes!
Did you Mic the cylinders? That's a pretty hairy looking piston!!! If you're racing it anyways, a nice bore and stroke would make it just that much nastier. It wouldn't hurt to bring the compression up a lil to run better on the junk gas they sell now compared to then too. Just my thoughts...