I can't answer your specifics about shelf life, but I do know that pasta keeps fine at least for several years without any special storage. We've got pasta that I got great prices on a few years ago that's just kept in the basement in either its original package or in buckets with gamma lids (no mylar, no oxygen absorbers) and it's perfectly fine. Can't tell the difference between that and something just bought at the store. (I'm sure it doesn't compare to homemade pasta, but store bought pasta is what we're used to.)
So I can attest to a minimum of 4 years shelf life with no special packing, and I imagine there are still many good years left in this pasta. I imagine that mylar, oxy and moisture packing would extend the life considerably. That said, I would not do any long term storage in a zip-lock mylar bag, because those aren't air-tight (defeats the purpose of using oxy absorbers).