I can see that you are extremely knowledgeable about both EVs and solar power systems. You did your homework and have the highest chances of success especially considering the perilous future of our electric grid. Congratulations.
Usually when I point out any of these current challenges, I face derision. We have a lot of electric vehicles in our area; the vast majority are Teslas which likely have the highest level of design maturity despite their costs. I have met no owners here who have the level of understanding that you do and their lack of knowledge is likely to leave them disappointed at points along the way.
Cars, trucks and airplanes are transportation tools designed with specific parameters in mind. If you take care of them they can last a long time and give good service. I am happy to hear that you understand the limitations of your batteries. I have actually learned a lot about them through tinkering with RC models that may be applicable if we ever decide to get an EV. They typically have a high rate of depreciation, so if one understands how to evaluate the condition of the batteries that they use... it makes it much more likely that a buyer in the used market will have a positive experience.
The other thing is how you will charge it effectively. In my case I live in the south and solar is great here. Plus I don't live in Commiefornia where they have third world power experiences. If I lived there I probably wouldn't get an EV. But here in Alabama where the grid rarely goes down and where I get good free power from solar, charging an EV is easy-breezy.