I'm LDS so I speak from a little experience
Call the LDS storehouse before you go, let them know what you want to do and that you are not LDS. Some have a requirement that you attend with a member of the church. If you don't know someone, they often can put you in a canning session with another group.
The kit contains basic food items to sustain you for a month. 12 cases and you are set to go. From that expand your list. The products are really great and prices too.
Re TVP - I once was foolish and bought several cases of TVP - all different flavors: taco, sloppy joe, chicken, beef, sausage etc. For us, it was awful. I for one, found that if I used as a means to stretch my meat, then it was edible. You know, throw in a handful to a pound of meat sort of like you might use rice or beans to extend the meal further. To eat it straight, I'd be hard pressed. Ended trying to feed some of it to the dogs to no avail. Even they don't like it - now that says something.
I've learned to home-can meat and it has made all the difference.