Astra, Zhao and Banyue?

I'm messing around with team comps and I'm wondering if Astra, Zhao and Banyue is a good team when it comes to giving buffs? Gameplay wise I find them pretty fun - and Astra enables Zhao's additional ability which is neat - but I'm afraid I may have missed something in their skill descriptions which renders this team suboptimal. I'm not great when it comes to the math.

My current, best performing Banyue team is him with Pan and Ju Fufu, so how would Astra and Zhao compare to them?

No Lucia or Dialyn in my inventory currently.

(M1 + Sig. Engine for Banyue and M6 Sig. Engine for Pan)