i agree with much of what has been written. I happen to like Magellan GPS units (they have a 7" unit for about $200, easy to see). I would say your number one issue may be your tires. Yes, you have few miles on them, but time is a killer for tires. You might want to at least replace the fronts. I had a front tire blow, and I was lucky (I had a steering stabilizer). Dangerous.
Echoing what others have said, you won't know what you need until you travel. At least once a year, go through everything inside and out, asking yourself if you really need this. I know that we carry too much stuff, but I do try to prune it.
Duncan, 2012 Itasca Ellipse 42QD
2014 Honda CRV, wife and cat
Florida and South Carolina