Help me understand my timing please

Wow guys, thank you both for taking the time to help me out. I will try to find an old cap to check the phase.
the intake is an M1 and the carb is a 750 holley w/ vaccum secondaries.

I just tried to order some of the 10 and 14 degree stop bushings from Don Gould at FBO, man what a cool guy! He was more then happy to talk to me and offer some advice, he sounded very familiar with my crate motor and ignition system.

Basically he said my motor DOES want about 30 degrees initial, but i cant get it all out of turning the dizzy cause I'll end up with way to much total and hard hot starting, he told me to try the following:

1) put the black bushing (18 degrees)in the dizzy, and adjust the car to have a total of 34 degrees, all in by 3300rpm.
2) the initial will now be down to 16, so I must run the vacuum advance to manifold vacuum, this will allow the timing to come up at idle and drop as the rpms go up and the mechanical takes over

I think this makes some sense and am going to give it a shot also

again, thanks for the ideas guys