I don't know how reliable your wheels are, how much "stuff" you take with you and how much you weigh. I take with me, in case I break a spoke, a thin lockring tool that can be inserted into the cassette lockring. Reinstall the rear wheel on the bike and using the bike's chain, I leverage the lockring off, to replace a broken spoke. Of coarse you have to have some mechanical aptitude. Other than that, I think you have most other bases covered. It's not a tool, but tire boots are nice. In case you run something over, and get the much dreaded major tire cut.