Congratulations on the KDX.
Like the KLR, the KDX is another hammer in the toolbox. Was turned on to these by a friend who helped me set mine up for woods riding. 220 version, but close enough.
Armor (bars, rad, pipe, etc), gearing, fuel and ride.
Someone said it already. Ride it. Park it. Can sit for months - 2 kicks and you're rolling again. Unless you leave the plug in the exhaust. Or so I've been told.
Have some small breast milk bottles I carry for oil.
Have had good luck fueling on the road/trail but having some fuel along does help take the 'concern' out of the equation. Have one of these Maier crossbar bottles I'll be adding at some point.
Now rare and collectible these bottles are getting harder to find. Another KDX riding friend gave me the one I have.
Guymanbro has a KDX he's parting out if you're needing anything but the seat. Ad may have expired so PM him.
Think he even had a Baja kit for lights if that interests you. Horn and brake light switch got me a plate here.
The rack idea is interesting.
Keep us posted on how this bike works for you.