Yes, raw meat and veggies can be combined in the freezer.
Onion, peppers, etc
Mix everything, fill tortillas, wrap up in freezer paper. Put in freezer bag.
Heat up in microwave for about 3 minutes when you are ready to eat.
I use one 1/2 lb bag of dry pinto beans and two cups of rice. It will make like 60 burritos, and they are good!
Is your husband getting a teaching degree online? What college?