The fix is just putting a quality battery to replace the oem one when it dies. You’ll be fine.

its your car, if you like it get it

My 22 CE has all of those, and I bought a nav SD card on amazon for $30 and it works. But really I just use my phone. A low trim may check all those boxes too though.

Not at the dealer.

If you want it done properly go to a place like Krown.

Or buy a few cans of fluid film and spray the undercarriage yourself as best you cab