If anyone has any information about how long you can store food like that, they're keeping it pretty quiet. It should last for quite a while, but a lot depends on how careful you were when you sealed it, and if there's any humidity. I would start testing the food yearly, and in any event I would be rotating out the supplies. I wish I had more info about it, but that's about all I can find.

Onward and upward,
airforce