Sit down and take a deep breath. I really want to help you. The classic car market is DEAD as of the moment. It is NOT a seller's market. It is a BUYER'S market and that is YOU.
Take advantage of it. You have only checked out a few cars. THERE ARE HUNDREDS MORE. So take your time and find the right car. Maybe this latest one is it but I'd look at every E body I could find within reason.
And just so you know - the undercoat on the purple 71 Chally is nothing more than a cover up of past work. The car had and still has rust issues. I took a look at the pictures you posted and it's quite obvious.
BE CAREFUL and good luck.
Todd