From reading these threads, it seems like our cars (from factory) like 10 BTDC initial timing and 32 BTDC total timing?

I just installed a new dizzy and today will fire it up.

Is there a way to find the correct initial/total numbers ideal for a modified engine if you're not exactly sure the cam specs, etc.? My motor was rebuilt by someone many years ago and all I know is it has a more aggressive cam, high rise intake and 4 barrel carb.

Do I still likely just want to set to 10 BTDC initial? If not, how might I find the ideal advance for my setup?

Also, can anyone clarify how you set total timing? From what I understand, you set initial at say 10, then you rev engine to (correct me if I'm wrong on RPM) about 2000 to 2500 RPM and note wherever timing stops advancing on the balancer. I then turn the dizzy whichever way so that advancement on the balancer now stops on 32? Obviously my initial could be very different from the 10 after this adjustment, but that's ok since total timing is my final parameter before locking down?

Thanks for tolerating my newbie questions. Appreciate any advice!