I would still like to see the rest of your roster.
==Level some 4* 3.60 next==
Personally ( having not seen your other heroes ) I would level:
Boldtusk 4* 3.60
Wilbur 4* 3.60
Guardian Falcon 4* 3.60
Kelile 4* 3.60
And play around with them.
Boldtusk can be tricky to use since his buff only lasts 4 turns, but you can use it to overwrite an enemy attack debuff ( example Scarlett or Skittleskull ) in war or raids. Boldtusk used to be an effective 5* hero, until they nerfed him down to 4* hero.
Wu Kong an Wilbur are worth building 4* teams around ( see notes ).
Falcon is the only current Elemental red defense debuff hero ( this is a big deal ) and has a defense stat higher than any current red hero, including all red 5* heroes and all red 5* HotM, which is very very nice.
Eventually I would probably raise Wilbur and Falcon to 4* 4.70, maybe also Boldtusk.
==Zimkitha or better red 5* hero==
Then I would raise Zimkitha to 5* 2.60 and see how she works with your above team. By then you might have better 5* heroes to choose from.
==Notes==