WOW! stay out of BYC a few days and folks move in your backyard!!! Seriously, I've had a very hectic schedule for the last week. This was my first week in a couple of months to miss the Tues flea market in Huntingdon.
Just read all the post and found you figured out the answers to most things I could have helped with. The Aqri center event is really good but I don't think they ever have anything that is not their own event. The flea markets are just that. Rent a booth with stuff to sale or go and buy; finding everyone would really be difficult.
There is a small open shady area in Atwood, TN (between Milan and Huntingdon) that has a couple of antique tractor shows every year. That is about the only time it is ever used. I doubt there would be much red tape to find out if we could use it. It might be just the right size to get together, have a small swap meet and plan what we want to do next. I will try to find out the contact information if that is of interest.
There may be another place like that in a small town. I was in Gibson yesterday and noticed a sign that says it is the geographical center of West TN.