Who’s the fifth? (no Logray!)

So, this is another help post, but it is really specific: with G12 zChirpa, G12 zPaploo, G12 zWicket (hopefully, still developing) and G12 Elder, who should be the fifth? I will not farm Logray for the foreseeable future, but I do have 7* Teebo and 7* Scout. So who should be my fifth Murder Bear, in order to have the best team for the event, and beyond it? I actually really like them, but not that much to finish more than 5 for now... Any input is appreciated!