750 holley vac secondary adjustments from 318 to 390 stroker

I like the 750 DP in your situation.
Me too. When I mash the throttle, chit happens instantly, lol.
But another thing I experienced;
There have been situations where I just needed a lil more power, and the VS carb is not good at a lil more. It's great at WOT, but not so much at partially open. There were times it would act like an on/off switch.
The DP is not like that. If you go into a corner a lil hot, you can just dial the power down a lil and then put it right back in, with no shenanigans. And if in mid-turn you want the rear to step out, no problem just feather the power in, whatever you need. In this situation, it sortoff acts like a big one-barrel with very nice progressive power delivery. With a stroker you will grow to really like this. But, in all honesty, not everybody drives like I do, so since you already have the VS, you might as well try it.
Besides, if you have skinny street tires you will never get into those kinds of situations, cuz yur stroker will be a point and shoot kindof car.

As to the actual question; what jets to start; I'll guess 70/78 with a 10.5PV or higher.

Yur gonna love that cam. Don't be afraid to put a free-flowing dual exhaust on her.
I'd run it no more than 2*advanced. With a single-pattern cam, she will lose 2* of effective overlap for each degree of advance. So in at 108*(2* advanced) the Effective overlap falls 4*, from something like 50 to 46. That sucks a bit. But the pressure goes up a bit maybe 3 psi; so that's nice,lol.