I failed to mention, I also installed a Stebel air horn on it. The stock horn is actually embarrassing when you hit the button. Think squeezing a 2 ounce mouses tail.
The Stebel is like 135 db or something like that. Definately makes a racket.
They don't really make a throttle lock for this bike. Due to the way the throttle cables come out, none really fit. The one I bought was a Vista Cruise. I used a zip tie to hold it from moving once locked, and put some teflon tape on the screw because it kept creeping out. I also rolled the grip away from the edge a bit to give it room so it wouldn't bind. It's not noticable.
A lot of folks put a center stand on it. I just use a stick cut to length and lift the bike a bit with my hand and place it under the right riders peg, that holds the wheel up so I can oil the chain while spinning the wheel with my hand. The stick just fits in my rear bag.
I'm still on my original tires and they look like they have a few thousand left in them. They always wear faster as they get to the end though.
I really love the double trip meter. That sounds minor but boy it's great. Set the second one just before a big trip or use it to monitor miles between oil changes.
The annoyance, the speedometer is slow by about 8 percent or so by others calculations. When at highway speeds, I just assume I'm five miles an hour slower than what is indicated.
Like I said, spend some time figuring out the seat issue, because we all know a sore fanny will ruin any trip. Try your different seat configurations on a 500 mile trip or so. I was able to do about 300 on the stock seat with a gel pad. By 400 I was uncomfortable, by 500 I was quite unhappy.
If you have any questions feel free to ask, I'm trying to think of things that are good and bad about the bike.
Your list of accessories seems good. Bungee cords are your friend of course. You can get a good amount of gear on that rear seat if riding solo.
I did ride this bike in the dirt around my town, checking out some back roads, well not really roads but desert. I found that if I had to do a lot of clutch work my hand got tired after about 1/2 hour or 45 minutes. The clutch is incredibly smooth but as I found, my weak hand had trouble after continuous use for a while.
I also went down a road that was very thick with sand, possibly 4 or 5 inches of drift sand. I thought I was going to get stuck, but once started had no choice but to finish the approximately half mile to the next road. It surprised me at not getting stuck, it trucked right through. Me worried the whole way since it was hot, and I didn't have water or phone if I had gotten stuck.
I've read people complain about buffeting with the stock windshield. I have not experienced this. Perhaps I'm feeling it but don't find it annoying.