1966 Plymouth Barracuda

It sounds like you have it steering and stopping safely, don't forget new shocks and a good alignment. I personally would work on making it more enjoyable to ride in for everyone. If it needs new carpet then that's a good weekend project. New engine and certainly new paint can be an extended process that takes your car off the road for a while. I would drive it and enjoy it as much as possibe when you get back. I've been away from a project before and went to bed every night dreaming of what I would do when I return. Start making a list of things that need to be done and then prioritize them. Be safe and thanks for your service!