Also, I would go with a electric cook top, so you don't have to store gas/butane in your vehicle.
Uhmm, beyond that, it's relatively straight forward.
Get two gym memberships, for ~50$ a month. A decent mobile plan ~100$ a month.
Watch a few videos how to find places to stealth park if you're not going to live in the boonies.
There may be a few other considerations dependant on your specific setup. Like your winter plan. Are you just going to go to phoenix, or do you need to keep a job and hense need a powerful heater.