Tips for E4?

I’m going to challenge the E4 soon. Is there anything that I should be aware of apart from the levels?

Spore on Kayla’s Smeargle. It was an absolute breaker during my first playthrough.

the fact that Yuki seems to have a ****ING 50% CRIT RATIO…idk why, she just seems to get way more crits than any other trainer in the game