I have all mine split up, but when I get my last two liters I was going to wait to do it. You think keeping them in the liter makes it not last as long? What about if I got glass liters for it do you think that make a difference? My other liters are broke down in 120ml bottles.
I think it will last just fine in a liter. My liter oxidized because I kept opening it every 2-3 weeks for two years. I don't recommend doing that! It was in glass, which I think is best for any long term storage.