Gluten free isn't as bad as it used to be. There are now whole gluten free sections in the supermarket (although you do have to watch the sugar content), gluten and yeast free pre-made bread, and even Dominos pizza now have gluten-free options. Therefore these days it can be as simple as substitution. It is more expensive though. It will actually be the milk you'll have an issue with - it hides in places you never would guess to look for milk.