Just got Yelans C1, any advice?

Okay, so.. before I got Yelans C1 I've always been using R5 favonius, never had a problem with energy management, be it single or double hydro team. Now that I finally got her C1 I felt really exited since I can finally use the lvl 90 elegy sitting in my inventory, it seems perfect, but I'm afraid it's still not quite enough er.. thoughts??

Btw I'm trying for some better off piece circlet for quite a while already, no success tho.. (art is official by hoyo)