Sounds like a solid plan. Don't be afraid to change things along the way if you see problems or opportunities arise. Nothing wrong with FBO training - just keep your eyes open. Don't let them try to sell you goofy financing schemes, just pay as you go. If you aren't bonding with the instructor, don't be afraid to ask for a new one, or even test ride another FBO. Good luck.
I hope my son puts as much thought into his career as a high school junior.