Poke around the web, you'll find info on people doing long trips ultralight - tent, tarp, stove, type stuff.
That's what I'm working on along with some future bikepacking. Lots of dirt and gravel and quiet roads nearby...
Here's a link to an overnight shakedown cruise with some new gear.Add a Jandd frame pack to the bike, a 3rd bottle for cook kit, and a Wingnut Hyper 3 to my back for frequently used items and I can get all kit, minimal food / water / etc. on it for a fast tour. (fast for me, slow for the ultra racers)
I'll dig through my links - I know I have some stuff bookmarked on people trying to get away from 4 panniers and the heavy touring setups... I'd love to go west (when the toddler gets older) and do a parks trip like this.