I think I got a somewhat decent farming team, which would be Joan (ex sniper), Thor (awakened but only 2 star), Astrea (pretty much VoF in 2 skills), Ramiel, and Tyr (not awakened, but lv80).

as for "clear solo"... might have to swap someone for Sol, but idk who. not like thunder gets a SSR healer anytime soon (they did recently on DMM but that's WAY further down the line...). i got perun too but if i'm using joan, then that's a better damage cut...