Fun question!
With your background in MT and opera, you of course know that a university degree in theatre (whether BA or BFA) is neither necessary nor sufficient for a career as an actor. Either he has it (charisma, talent etc) or he doesn’t, and it sounds like he just might!
I agree that combining D1 with a BFA will be nearly impossible. To allow such a thing, the football coach would have to see your son as being worth the trouble– in other words, probably a weak team. For example, maybe the Wagner coach would allow it (I don’t know), but would your son be happy with so much losing? Certainly the acting opportunities for Wagner are very strong, but the football is not.
The only program I can personally speak for on the list above is Fordham. It has strong theatre training, but I don’t think it would work for your son– the theater program is in Manhattan while the football program is 40 minutes away in the Bronx, and it has a huge core, with 4 semesters of foreign language required.
Another idea is UMN. Has both BA and BFA theatre. Maybe the football is too high level however?
In my opinion, the best bet would be to focus on football fit above all else. He will only get one chance to play D1 football, but if your son is truly talented the acting opportunities will wait for him until after graduation.