Car looks great Paul.
Like others have said, change the hoses, hose clamps, plug wires with dated correct ones, spray the whole engine & compartment down with de-greaser & power wash it off. Replace the carpet if you want to, swap out the console & dash bezel when one pops up and have your steering wheel restored & replaced. Keep your eyes out for a correct 66 389 motor and rebuild/replace if when you feel like it.
All of this can be done while still driving & enjoying the car and isn't that what you bought it for?