My thoughts? I would portion it out into jars. But I'm a bit paranoid too. I got a few 8 ounce tubs and Jarred it. I'm not going through it that fast. And I'm random in my selection of smokes. Heck, if I open a 100 gram tin, I'll weigh a fifty gram jar out and cellar it while smoking the other half. Then years later I find it and it's fine.
But that's just me.........