I would bring up Cara too.
Focus on Zem, Taurus, Jasmine, Tholin, Cara, Arachna, Monkey King, Bloodspear, Gale and Seraphine if you could get her.
Gale will be of diminishing returns when you get higher, the others you have are more or less Meta for many situations.
Ezio is awesome, but he needs to be 7*, which you can't get. He is a nice to have hero, but wont do you any justice on higher levels with only 3*
How much wood could a Kaneq chuck if a Kaneq could chuck wood?