Re: hi mtn jerky
as long as you use a salt based marinade like soy sauce it will hold the shelf life as you need, that is if you can keep it that long.
an excellent product i have found for my marinade is "original allegro marinade" its ingredients include:
soy sauce, (water, salt, hydrolyzed soy protein, corn syrup, carmel coloring) water, lime juice herbs and spices.
now im not sure what herbs and spices they use but you can see them floating in the solution and its good and simple. i will add a little A1, garlic any thing that floats my boat at that moment.
i found this at Sams Club, im sure they have it else where but i have not looked for it directly.
anything with a salt base will extend the shelf life by a few good weeks. i also purchased a Food Saver vaccum sealer witch i strongly recomend. not that its worth the time to vaccum it since i usually have it all eaten within days anyway 8)