Best 1965-75 4-door sedan for an beginner?

Typically I just post pictures of cars on this subreddit but I am doing something rather different today. I've always had appreciation for the 4-door giant boats of the 60's-80's (the only reason why I don't have any sedans from 1976+ is because I live in California and I don't feel ready to tackle the hurdle of smog check right now)

I am 18 (M) as of writing this, and while I don't currently plan on getting an classic car atm (ideally I want something more modern as my first car, most likely an P71) I ideally would want to own one in the future if given the chance. But I figure it wouldn't hurt to ask this rn, what would be an good beginner 4-door full sedan from like circa 1966-1975 (as in which of these is going to give me the least amount of headache to maintain with)