Stroker intake question and guidance, mainly guidance.

You have answered your own question, for the most part. If 95% will be street driving your typical RPM range would benefit from a dual plane.
The problem is whether or not an RPM Air Gap will restrict your combo. Likely it will, but so will the M1, even in ported form. The Super Victor or an Indy 360 square port would still benefit from a quality port and balance job.
No currently available intake will be perfect, but the Victor and Indy are very tall, so that's also a consideration.
I wonder if anyone has purchased an Air Gap from Hughes with their porting, and can comment on it? On their web site I see a deep port match and it's pricey.

I'll add that I am not a single plane hater at all. All my toys have run single plane intakes so far, and all carbureted mostly on the street. Properly tuned, you don't even know you're giving up a little low and mid range.