Well as first suggestion i would do the shield wind team also known as the Empress Mei team.
So it would like like this
Main - Mei - X -
Mabui - X - X -
Sasuke - X - X -
Main skills would be 3-2-1-1-1
PET - Lightning tiger
The idea is to use all the skills on round 2 and reset them after. With all the shields you got the dmg and the hp and shield to survive others attack.
If you want a fire main team more i can do a fire team a bit later. Check out this team. There's a video of it in action on youtube. You can check it out there.