Slowly updating here (about 1 month old info).
Not really any new info on the frame pedigree yet.

I frame-savered the frame and fork, then did a cleaner wax.
The cleaned up groupset is shown below. Notice the big 30T rear cog! I was skeptical if this would work.
New crankarm stickers on the way from smd4!

The BB-7700 was all new to me. Very interesting design… online reviews were so so, saying it is susceptible to dirt and finicky. Mine had bad cups/cones, and I was not able to find replacement parts. Plus it had Italian, and I needed BSA threads… But I was taken by the unique design, so I picked up a beautiful NOS one.
My one real mistake was not getting frame BB threads chased. I have never had to do this before, since all my other bikes have original paint. This one had overspray in there. While the BB went in, I definitely used more than normal finger torque getting it in. I don’t think any real harm done. Oh well, live and learn!
Then, a super nice neighbor gifted a Campy record SP! A little polish and it is looking great.