...he needs to work on his outside shot. The rotation with the 2 and 3's will be pretty fluid and involve all the players you listed Knell, SJ, Saunders, GG, TT, and likely even see Hall get some minutes here working alongside Williams.
As for the 4's I think Pope is still going to try and reel in an experienced guy like Allick to be the starter because Fouss' skill set doesn't lend itself to him playing the 4. He needs time to develop that and while coaches might slide him into that role from time to time (like they tried with Lohner at the 5 before the Baxter injury) it won't be something they rely on for big minutes and will be dependent on specific player matchups. I thnk for now you can pencil in Fouss as the starting 5 with Atiki as his backup.