Sounds good! I was thinking they'd move from Northern Queensland to Narrie at the beginning of January, so could pick them up at either places. If Adam wants to be a total dork though the Longhursts could go get Nox early and catch them squeezing in a quick dive, which they could jump in and join. Or could just do a more low key thing where they pick up Nox and they just get adjusted to everything and Longhursts adjust to them. Whatever works for you!
As far as Lauren and Nox goes, it sounds like maximum potential trouble could start at the beginning of the term, though I am not familiar enough with Tally stuff to come up with ideas with threads right away, not until school stuff gets started anyway.
Senan: Nox would have no problems going beyond school grounds to practice and work on stuff. Theyd be happy to use charms on invasive trees/weeds/etc out in the bush. And Nox knows plenty of mermish and gobbledegook and grew up having classes with plenty of different halfbreeds and species so they could go from learning language to Nox expanding on cultural stuff too.
Alex: Excellent! He lives with Caitlin and Cassandra in Narrie right? So could start having dreams after Nox arrives there. As far as seems odd and dreamlike goes, could be around town where shops are open at night (when it should be closed), with maybe sky having the wrong constellations for the time of year, and then everything else be relatively normal save for Nox goofing around and doing nonsensical things no one in the dream is paying any mind to. And then the music stuff they can maybe get into later when they meet more officially and Nox learns he's all about music.
Travis: Haha great! Maybe they have an initial encounter before school and then progressively more after? Maybe run into Nox working, then running in the morning, then Branch out from there?
Tyson: ooh Nox could be one of the people who'd watch the tourney, (bonus that it's outside). More character involvement could involve a thing where people try to land a hit on a fighter or do some light/playful sparring? Nox could probably find a gym, or go gym hunting and then run into Tyson, they could end up as ocassional running partners, as Nox would probably do that more regularly.