I've been going Aquatic / Agrarian / Budding and Unruly / Nonadaptive
Aquatic as the bonuses are good and get even better with Hydrocentric, given you won't be building Ecu's or wanting Relic worlds (0% habitablity) being locked into just Oceans isn't a big deal. Plus, with Hydrocentric you'll be able to push all your planets eventually to size 33, 30 from the Wilderness planetary decision to grow planet size and then 3 more with ice mining after that. It really is just flat out the best trait for Wilderness.
Agrarian because you just need soooo much food for meat ships & space industry and all of your pops. (Though if I plan to go Void Hive and ignore space mining costs I might drop this for something else and pick it back up, sorta, with Vocational Genomics post-Ascension species mods as space industry is the most annoying - for me - early game food crunch.)
I prefer Budding to Incubators Rapid Breeders as I tend to have more issues with running out of Biomass the longer the game goes so the stacking of growth as I grow more works better for me, Incubators Rapid Breeders might be better for early game though if you want to swap to Budding after you get planets settled and jobs being worked (Biomass locked into jobs and not being spent as a resource).
Unruly is kind of a wash early (compared to the Planet and District size hits) and I'll drop it when I Purity ascend and pick up new traits as it will be hurting some by then, and Nonadaptive is a wash as I'm gonna make everything an Ocean anyways for the Aquatic / Hydrocentric bonuses.
Edit: Oh yeah, Wilderness can't take Incubators. That was the other reason I go Plant/Fungoid and take Budding instead, so the choice is Budding or Rapid Breeders and for some reason I can't recall right now I tend to prefer Budding.