Balance is all well and good, but, there's so little in the way of punch in your lineup that you'll have a tough time if you can't win 3 rounds. I'd switch out Nahi Cr for a 2* (Treeman/Flora/Jeto), as well as Onik for Flanagan. That leaves you with 2 extra stars to play with-- you could upgrade either Noodile or Rico to Gretchen and Jiro to Qubik (for a 22333444 setup), or upgrade one of those to a 5*.