What fuel is best?

I'd run it, or at least check things before replacing, exception of the spark plugs.
And depending on its situation, best oil change is usually with the oil warm. Judge whether that's wise when you see it.
I'd bring a couple of condensors and points, but new ones are a crap shoot. If the old ones good - run 'em.
Timing: Bring a light, a tach, golf tee (and a rag). If its the original distributor, set it to factory initial. That will be close. You can make small adjustments if you find its needed while driving. Don't see any reason to use 93 octane. Its not cleaner, it doesn't have more energy, and it costs more.

I’m fully aware that 93 octane is not higher energy, and more expensive. With the trip going through the Rockies and being almost a mile above sea level it may need to be used if I can’t adjust any pinging out with timing.