Well I hate to said this but your first problem is your in Florida. I feel that most dealerships in Florida think everyone is made of money and they are greedy to take it from you. Glad you were going to walk until they blinked. Just this if you didn't walk and paid the mark up would they given...
Auto companies do a ton of testing in Arizona near Double Dues they can drive up a mountain to 12k then drive to Tucson and be almost at sea level in one day with extreme temp changes in one day.
I can't believe those Broncos aren't all scratched up. The same Broncos that I drove when we did the off road in Moab. Hope you all took out the insurance on them, LOL
If you live in Michigan or Florida Lake Michigan CC is a great place to get a loan and anyone can join all you need to do is open a savings account and they pay 3% on your checking account with no min balance.