Don,
There's no reason you can't fly your motors at a Tripoli launch if you're a TRA member and L2. Just need to fly an H and a J certified commercial motor in your own rocket. After those two flights, you can "team up" with someone to put your motor in their rocket. Not a huge expense or effort considering the costs of the supplies and equipment for making your own motors. You don't have to call yourself a manufacturer, just an individual flying a "project" with a friend.
You may have lots of reasons to not want to do this, but it's an option if you want to get back into the world of high power rocketry. See how things have changed. Meet people. Get feedback on your motors. Find out if the next step as a manufacturer still makes sense to you.
All this has been said before. I hope you get healthy enough to follow through. Otherwise, it's always interesting to hear from "the old geezer" of rocketry and his big plans.