Your suggestions please, I am jonesing to build.

I would try backing your mechanical timing off to 34* and plugging the vacuum advance and seeing if it would run on 93 octane first. That would be a fast and cheap test. You might be down on power, but these other options of lowering compression or building a lower performance engine are doing the same thing. If you can get away with just moving the timing you can have the best of both worlds, streetable but able to be quickly tuned to a race engine if you go to the strip.