What I can emphasis with your past experience with bodywork and restoration is how it’s double the work to change the color if you plan on doing it right. I have painted many cars in my prior years but was amazed how much extra work it was painting mine a different color. Engine compartment, dash, glove box, transmission cover, door jambs, back side of the hood/bonnet, etc etc. Doing a quick rather than thorough job on any of these areas really degrades the car when you are done in my mind.
The other thing I would say when choosing a color is non Metallics will be much easier to touch up if you plan on keeping it a long time, but I would guess you know that from your experience.