I mean, technically you're probably right in that they aren't full Taelesol until they're done with training. And you are right that there should be different backgrounds. I just sometimes latch onto a certain vision too hard and get uptight, is how I would describe that. Sorry about that, there's really no issue.
Talking about character growth, Kalorn is probably still going to get into some scraps with bullies who don't back down. So there's some growth for him. I think. Needs to learn balance?
Also, don't know why I'm thinking of this now, but the PCs will be a team through training and after training. So they'll go out on missions and patrol together, hang out together a lot of the time, etc.