I have an X2 with a somewhat similar setup. Mine is a 750 cylinder with higher ports bored to 82mm (stock sxr piston size), blaster limited chamber, modified oem head, not sure how the compression of your 30mm domes compare to what I've got but mine shows about 190psi on a good compression gauge. I'm using dual sxr i-body carbs, so overall probably a pretty similar setup.
I'm running the wax curve but I backed off the advance at the top rpm a little because I was nervous about long WOT pulls with the high compression, I can't remember the number but I think I set the 8000rpm advance point to 12 or 13 degrees and otherwise it's the same as wax curve.
I make no claim that this is optimized, but I've been running it with 91 octane pump gas for a while with no problems, and it seems to run pretty well.
Probably could get away with regular Wax curve but I was happy enough with how it ran that I never changed it.
To be clear I'm talking about the "original" Wax curve not the more agressive "V3" Wax curve.
