Awesome score on the Phantom! It's great that you know the history of the bike, so you know for sure what's original to the bike. There's a lot to work with there, and it's good you decided not to repaint it.
Whatever you do, as far as replacing parts, hang on to the original parts for the bike. If you ever need/want to sell it in the future, it will be worth more as a whole bike, if all the original parts are with it.
Whatever you do, as far as replacing parts, hang on to the original parts for the bike. If you ever need/want to sell it in the future, it will be worth more as a whole bike, if all the original parts are with it.