I would sit down with wife and decide on one of the vehicles. Me, I would pick the 71. Anyhow pick one, one that you can keep and make nice over the next few years. It is probably best to pick one you can get running fairly quickly. Get it running and run it. Run it and learn to deal with the quirks and never ending needs of an old vehicle. Yes, part of the fun is it's old. It creeks, it's noisy, you'll smell gas and oil. You will learn new four letter words in your quest to keep it running. If you find you don't have a passion for that and your wallet does not afford you to pay someone, you can always sell it.
But, it you don't take one now you may not have the opportunity to get it back a few years down the road.
Post pics!
Good luck!
j