[JLMounce]

This is a good starting point. You might be able to play with adding a degree or two of timing up around 4500-5000 rpm. I ramp 1 degree of additional timing from 3000-6000 on my setup and it helped to extend the power-band on my setup.

461, KRE 260, 232/238 112+4

Edit. I think your low load advance at timing might light a bit more as well. Your setup should be able to idle down around 700-750 rpm. 18 degrees is a good starting point, but try going a bit further, it might like 20-22. I run mine at 24 where it made best vacuum.