Get the windows, it’s worth it. When you’re holed up in there camping and moving around seamlessly between your bed and tent it’s nice to have some visibility outside. Plus, I like the visibility when driving from a safety factor.
I love, repeat LOVE, being able to see out of the back when I’m driving. It’s super easy to just put some magnets, using double sided tape, on the inside of the back door and attach the other side of the magnet to a make shift shade that you can add or remove whenever you want.
I also put a motion sensor light above the window on the inside, when I get out of bed in the middle of the night and drop down into my truck bed it lights up automatically which has been amazing