You're spot on NapierNix - a few chch kids but majority from all over, including international.
They haven't had a live-in option available so the kids have been homestaying; but the talk was (even earlier this year) that they were looking at building a dorm set-up on or near site. They definitely want football/education/accom on pretty much the one site (similar but different to Ole)
Speculation as to why Wellington - the Nix/TW connection, plus I guess easier for kids to play for Scots in midweek school leagues and/or Miramar on weekends; education sorted; accommodation/boarding sorted; good football connections/programme via Valerio Raccuglia. Pretty neat and tidy package really. Cost should be approx $20k per year.
Personally I think APFA will think, "right that lot is sorted; now let's take the model to bigger markets - Auk, Aussie, Asia"; and/or work the FIFA money via setting up academies in Oceania etc.