If you prepare the bike well and you'll need nothing.
Meaning less than 10yr old seals, paper fuel filter in front of carb, fresh oil in the gearbox,
1. Keep temps as low as possible with wc head. Can't say how many times people have air leaks and seize. With wc heads you can have an air leak and have plenty of time to figure out your issue without seizing
2. Use a normal oil mix, 32:1 or 50:1 or something.
3. Carry and extra one of everything so you won't need it.
Tubes, pullers, extra clutch, sockets, extra belt, Cdi or points/condenser plus chain strap vice grip wrench to undo rear pulley and variator nut/clutch bell nut, flywheel nut. Bolts, bailing wire, oil duh
On pinball I only had one seize from the miles on the kit, wore it out. (But it was my first ever kit)
I brought an extra kit and mounted it up and we were off.
Don't be afraid, it's the most thrilling thing ever to be traveling by mopeds long distances.
Oh, a phone or gps is cool to have mounted, along with a 12v out for phone charging as you ride.