Do the same and set the total timing to 34 degs. (you won't see too many sbc strokers that like more than 34 degs total.)
Because of the stroke/bore ratio the max cyclinder pressure will be closer to 15 ADC than the 22 deg.
Tend to set the the total a little over advanced, plot the curve at 1500 rpms 2000, 2500 3000 etc...use springs/weight that give a nice round curve starting around the 45 deg then curves nicely off just underneath....that will get you close in the ball park, enough that dyno will make insignificant changes.
Start retarding the curve till you feel power drops off,(Do this with the rpms near where the curver is all in and above) it will drop off withing a couple degrees....advance it back up about 2 deg above this piont...any further makes the car sound stronger, but the power drops off very slowly as you get higher.
Once the all in is esptablished, its a matter of establishing your idle advance.
Still with VA disconected...play around...so you find say 16 deg is stable.
Return the dizzy to where you established the power...
If the cent is already at or very close to this, fine....use a VA that starts and comes in above idle vac but all in cruising up a slop vac
If the intial is too low, use a VA that is all in or no more than 1" above the idle vac with this curve and has the number of degrees in it to take the intial cent +vac upto what you want once the engine is fired...modern HEI dizies usually require more degrees to be put in the curve to run manifold vac.
A low intial cent (minus the VA) has far less load on the starter moter, easier firing, less load on batteries etc.