Try initial timing of about 20-22 deg. btdc.

If you set initial timing this high you will have to limit the amount the advance weights move.
[ avoid pinging )

Set total timing between 32-36 deg. btdc.

keep the vac. advance disconnected for now

Current era pump fuels will not act the same as fuels of the early 70's.

I have had worn plastic timing gears jump a tooth.
But it usually wont run then. can't hurt to look.

Also electronic ignition is a good upgrade

good luck