Great breakdown! I’d like to add train to the options. OP might be able to utilize an Amtrak train for a portion of the trip depending on the travel destination. Here’s a map of their routes. Tickets can be purchased online, they offer assistance for disabilities, and they have places to lie down or eat food.
If you decide to fly OP, consider getting a pack of gum to chew on to help with pressure/popping in your ears during altitude changes of takeoff and landing.
Congratulations on registering to vote!
If you haven’t already, you should look up a sample ballot for your specific state/city so you can know who all these people are and/or what the actual proposals. I was a bit overwhelmed by all the non presidential questions the first time I voted. So now I research before and take my little paper list in with me so I don’t have to think/decide in that moment while at the poll.