Obviously dropper. pedals, tubeless. Then just ride it a load! I have postponed most of my planned upgrades as I like it as is.
Spend time getting the suspension dialed in. Try the Rockshox app, 'TrailHead', to set the forks.
I have the same model, Added a dropper, pedals, and tubeless, now have about 100 miles on it. At first I was thinking to upgrade the fork and brakes but eh they seem fine. I did cut the front tire on my second ride and patched it from the inside and I have had stans seal at least two small cuts in the back already.