This works out to 6-8 cups of chicken depending on how much you start with. I like to save serving sizes of about 2 cups in freezer bags.
Cooked/Shredded chicken is good in the refrigerator for 3-4 days, and in the freezer for up to 2 months. Store in a well sealed zip-top bag. Be sure to let out the air before sealing the baggie.
Also to note: Chicken thighs have more flavor, and are perfect to use in soups and baked dishes like enchiladas.
I prefer to use chicken breast meat for tacos, quesadillas, wraps, things that won't be baked.