My flat kit for tubeless is more sealant with a filler tube, a core remover, a pump, and plugs. It's been a few years and I've never had to use the plugs. (Admitting that you do a lot more mileage than me.)

I should, have not yet, put one of these core wrench caps on one valve and a Schrader adapter on the other on every bike. One of those things that I just never hit buy on the amazon cart