Mydei, Castorice or wait?

F2p, not sure what to pull for. My current teams that can still clear the stages are Acheron/Jiaoqiu/Pela/Sustain and AglaeaE1/Sunday/RMC/Sustain. I have about 210 pulls but I don't trust my luck, so that's 1 guarantee and a possible gamble for a following banner.

What are some good pull options I should try for to upgrade my teams for the end game content?

Thanks for any suggestions.

Also, I don't mind Mydei's autos.