I think we should have a cutoff age of 65 to enter because you'd be 73 at the end of a second term and that seems reasonable. If you lose after your first term, you would be prevented from running again due to the age requirement as well.
If they ran a younger candidate, Biden would be vulnerable and I hope he'd reconsider going through with it. I know you find him suspect but Newsom appointed himself extremely well in an interview with Hannity last night, of all people. Unbelievably, the conversation was respectful and informative and I think he'd make a great President. He addressed and knocked down every criticism he's sure to face if he did decide to run. When you have time, give it a listen and let me know your thoughts.
In the second clip, Hannity is trying to convince Newsom to come on his show and do a 2 hour debate with DeSantis and Newsom said "let's make it three hours and you can give me a one hour notice and I'll come without notes" LOL