I’d go with Rubio or Scott. The others won’t add anything to the ticket. It’s more important to win than to get the right successor. Actually I think Tim Scott adds most to the ticket. He’d help in PA, and PA is the essential state to win. If Trump wins PA, then he wins.
How do you address the Electoral College with a choice of Rubio or Scott? Do they resign and move to another state? Or do you think Trump has enough electoral votes to lose Florida’s?