No blood, no foul Mitch-- there's 31 flavors for a reason.
I understand the logic you are following, and in that vein-- I'd like to offer another option.
Have you ever considered a 92mm "thick wall" cylinder. The old Mahle 92s got a really bad reputation for going out of round, due to the thinness of the cylinder walls. Think of it like this: your case and heads need to be opened up accept bigger cylinders than stock. Malhle 92s fit in the same holes as 90.5s-- the old-style 92s are bigger on the inside, and the same size on the outside. That makes the cylinder quite a bit thinner-- thinner than any other cylinder out there. That's the way it's been forever-- so 92s just got a bad reputation.
94s go in bigger holes. They aren't as thick as 90.5s, and as a result are a bit more "out there". There's trade-offs: a guy can build a lot of power with a bigger cylinder-- the valves can be bigger (because you aren't running out of space), etc.. However, they are thinner than 90.5s, and there's more surface area to get hot.
That's where the "thick-wall" 92s come in. The cool thing is that they fit in the same holes (register) as 94s, so they are very, very thick. The thicker wall is a bigger heat-sink, and it has less of a tendency to distort when it does get hot. They're bigger than the 90.5s, so you can get more displacement out of them, and they have a (hypothetically) better piston ring seal than 94s when hot.
Your same 78.8 stroke (which is not a "little" more than the 69, it's most of the way to an 82) yields 2095cc with a 92mm cylinder. If you just went ahead and got an 82mm crank, your displacement would be 2180cc. FWIW, a guy on the Samba named Glen Ring is running just this engine with some Sims Stage 2s and an FK8 (with IDAs), and he's making really, really serious power.
Playing it safe, you could use the 78.8 crank, some thick-wall 92s, a W120, so 40s (Dellorto or IDF, I don't care) and some 1-1/2" headers, and be pushing up hard on 130- 140 hp (Orange County Correction Factor)... and it'd run for 100K mi.
Nothing's ever easy. There are tried and true formulas, but there's some newer stuff out there that is just plain nice. I've heard nothing but good stuff about them. I don't have them because when I bought the cylinders for the 2110, the thick-walls didn't exist yet. I don't have them on my 2276 because it's not that kind of engine.
I'd love to see somebody put one together.