Help setting timing and vac advance

That's going to need a short curve with a lot of initial (idle) advance. I'd start with 20 initial and give it about 14 mechanical for a total of 34. I would turn the vacuum can adjustment all the way counter clockwise to start. This gives the advance the soonest in the vacuum range. If you get no spark knock with the can adjustment like that, leave it. If you do get some spark knock on part throttle acceleration, turn the vacuum advance adjustment two turns in and try again until no spark knock. I bet you won't get any. At that point, you can plot out your curve with the light, but it will probably be so close you won't want to mess with it.