I once owned a Vista Elite built by Araya in Japan. It was a very nice, well made bike.

A lot of these old bikes clean up nicely. The rust in the painted areas can be scratched out and touched up. The rust in chrome is often little pinpricks that have accumulated on the outside of the chrome, polish it off and the pinpricks are barely visible. And the aluminum parts will sparkle with a good polishing.

I also rode a lessor name leather saddle in the seventies and it hurt on century rides that I didn't bother to prepare for. A modern black Brooks B17 with steel rivets would look correct on this bike and feel a lot better. MKS touring pedals would also look correct, function well, are high quality and only $30. I second the advice given above to repack the bearings and replace the brake pads with Kool Stop and you might think about replacing the brake cables and housing, they will feel smoother.

Your bike is nicer and more versatile than new bikes selling for more than $1500 in bike stores today. And a LOT better looking.