Thank you for your service Kevan.
Being just up the road from you, sort of, in Griffin GA you would be more than welcome to come up and take a good, long, hard, slow, look at our 2720SL when you return home. Learn how everything works, opens, closes, etc. . . in the backyard away from the sales folks if you want. Just give a holler.
1. I would go for the larger TM if I had to do this all over again. Seems like more room is always better. Especially on rainy days.
2. If someone wants to steal something they will. No matter what. Been camping a long time in one form or another and so far no one has taken anything from any campsite I have been in. Take the prudent precautions of course.
3. This forum is a good place to bounce ideas around and too learn about future campsites. In addition to all the ideas shared earlier. I usually use the internet to research new places, routes, etc. . .
Good luck to you and yours. Come home safe sir.