My set-up for trusts I used to solo all my CP/JP to master my PUP up in Escha-Ru'ann on Aerns worked wonderfully for me:
Kupofried (no interaction, just CP bonuses)
August (tank, great DD and WS'er)
Qultada (COR rolls and buffs, plus SkChains nicely every time with my h2h for insta-kills, or with August's WS for heavy damage)
Zeid II (great Stunner and WS damage with me or Qultada for near insta-kills, either me then Zeid II, or him then me for WS)
Yoran-Oran (UC) (for healing, buffs, unenfeeble, etc... never really interacts with target. Apururu and Kupipi work just as well, even Mihli if want bit more DD)
I'd be able to pull one Aern from below, have it then come to me and link up 6~8 more Aerns for massive kill time, that usually took ~2minutes to kill them all, then repeat.
My automaton set up for RNG frame for massive dmg and great WS's and SkChains with Zeid II and me.
This set-up used to net me 30-40 JP an hour soloing, topping 60+ if Exp campaign and/or i had full complement of rings to use (Trizek, Capacity, Facility).
All the bonus chests and items (eschite ores and replacement rings were nice) helped a lot.