Don't worry, Taco. I've been going through a similar dilemma. I keep struggling to indefinitely decide on which of two particular OCs I want to use for my third character. Both characters would probably lead to dramatically different plot points, so it really does matter for me to decide.
I sincerely wish you luck on your end!
Regardless though, I continue to admire your deceptively complex insignias though. I can't begin to imagine how much creativity you hold. It seems like you can come up with unique and interesting things faster than I can, but rather than envy, I can't help but look up to something like that. Hopefully, I'll be as creatively talented as you are one day.
Likewise, I wish you well on your chosen path. I bet you're going to become more successful than you already are. Keep up the good work and I look forward to your participation in AATR3!