Lease turn in

Thanks for your service, OP.

To your question, I've leased a few Toyota and Lexus vehicles, and my experience has been that you can also trade in or sell outright (better option in your situation) and likely come very close to paying off the lease balance, or maybe even walk away with some cash in hand, due to the high resale values these vehicles have. I have done this twice and both times, it was favorable to me. just a thought, and you may not have to undo your mods that way.
I don't have experience with early termination otherwise.