How to get into Ultra Unsupported Racing

Bikepacking Race Rookie Jan Koller has recently gathered his thoughts about how to get through your first session of ultra unsopported bikepacking racing.
What do you guys think? Would you give additional advice? Would you give it a go?

https://gravgrav.cc/article/how-to-get-through-your-first-unsupported-bike-packing-race-season