Welcome @Largobuc. I'm an ex-Floridian (St. Pete) and started the game at around 50 as well (don't know about you, but I kick myself for not learning this game as a kid).
Lots of good information and conversation here.
Do both range and on course play. I use the range to work on things I have issues with. Example.....I had issues with a 3 wood so I worked on that until I had CONFIDENCE I could hit it from fairway and shorter rough. You may want to work on your driver swing there. Mindlessly hitting through the bag does little for my game except as a warm up.
The course gives me many different lies to hit from I can't recreate on the range. Uphill, downhill,sidehill etc.
@Hacker James UST Mayima is mostly used in hybrids and irons by Tour Edge in the Exotics line. In the Hot Launch 2 line (i.e. your Driver) they do use UST Mayima. They did trim down the Stock shaft options a bit for the EX10 line, but in the EX9 anyway it was a stock shaft.
@WUTiger did you check the "Classic Clubs" section. The "Tie" Series was the stock shaft of the XCG7 Beta.
Just to add to what Scott said here, often fixing your priority piece will fix other flaws in the swing that you aren't actively working to change. Flaws are compensations and once you eliminate the bigger problem, some of the smaller compensations will go away. That's why there's no map or plan for a swing - you need to see how the change affects the swing, then address the next piece.
Trying to work on a bunch of things wrong with your swing directly at the same time is kind of counterproductive. If you flip, you need to fix the root cause, not the flip itself. That'd be like trying to cure an illness by only addressing the symptoms.