Now that I'm 14 days into my trip, I've learned a thing or two about things I would do differently next time and hopefully this helps anyone looking to do this trip!
The bed... I'd definitely do a more DIY style and try to make as similar a mattress to a real one as possible. Whether that's using foam, or trying to build around the frame better, or just buying a new car. I've been sleeping really poorly lately and it's because the mattress isn't great.
Curtains... I'd plan this out better next time for sure. The car doesn't have useful handles so again, might be a new car thing, but definitely wish I cut and measured more.
Clothing... you don't need day to day clothing. You need lightweight, breathable clothing... especially in the summer. The typical cotton shirts are heavy. I should have gotten button ups or breathable clothing only. Especially when you can't shower much, this is crucial.
Cooking stuff... I'm not cooking much. It's a lot of effort both from the grocery buying to the cooking to the clean up. It's much easier to just eat fruits, raw veggies, sandwiches and eat out when needed. The cooking stuff takes up quite a bit of space in the car too and that would be nice storage for anything else.
Shoes... if you have hiking shoes, you don't need running shoes as footwear, unless you're a runner.
Solar Panel... unnecessary purchase if you're spending a lot of time driving. Great if you can put them on the roof to gain storage, but most of the time I'm driving 3/4 hours a day and that's quite a bit of charge on my Jackery. Didn't need the solar panel at all. Useful if stationary for days on end, but that's really not what I'm doing.
Cooler... should have gotten a smaller one! A car fridge is only good if you're driving a lot but it can also be run by the Jackery, so that could work too. But coolers are good for holding more space. Just didn't need THIS much space.
Hope this is helpful!
As mentioned, AllTrails has provided me with 3 codes for free annual passes to give away. In order to be entered into the raffle to win, leave a review on Apple Podcasts and screenshot the review and send it to me on Instagram @lukeblessed! The contest is open from July 31 - August 7th. Winners will be announced August 10th.