The numbers look good to me. Don't forget the store owner would also have a management fee included in those numbers - over and above your 117k estimate.
Regarding the commissary business Dominoes is running - that's also par for the course. It really doesn't cost the franchisee extra due to the buying power and reduced labour cost that they would benefit by head office handling that aspect.
I thought the most interesting thing is that companies like Pizza Hut don't include commissary revenues on their reporting.
Slick buggers must have a separate, non publicly traded, company keeping the commissary profits to themselves- sweet!