Just got c2

I just started building Nilou since I had Lauma which I wasn't using in any team. I gave her Serenity call (I don't have her weapons from the weapon wish banner) and the 2 sets that give her 20% HP. Lauma has Blackmarrow Lantern and SMS.

What artifacts should I give Xingqiu and Kirara and what stats to prioritize? Should I change something else in this team?

+I don't have any sustain hydro characters except Barbara and I don't really like her that much