If you want, I have a couple of spreadsheets with IDs for teams and players to help, including those that were only used in FIFA Manager.
When I was editing 16, I used them and realized some of those IDs linked automatically. It comes in real handy for adding national teams.
With your mod the Concacaf region would now have 8 teams in the game.
If possible it would be nice to include Concacaf Gold Cup and Concacaf World Cup Qualifiers.
FYI these are the final 8 that will try to qualify to Qatar 2022.