Mass, just send me one of the bags of stonehaven, i'll take care of it for you and let you know what works best. You'll get the bag back, can't make any promises about its contents though.
I've said it before, but i don't store my tobacco in anything other than the tins they come in and i have had no issues with anything drying out or losing flavor. Now granted, i don't have a cave full of tobacco like peck, but i think you'll be just fine leaving it unopened in the bag. Unless you are cellaring a shit ton of tobacco, i don't get the big deal with the whole mason jar aging thing and the obsession over it. If i get an order of 5 different tobaccos that i have never tried, i open every tin and just store it the way it came. I have probably 50 or 60 tins of open tobacco and some have been opened 6 months plus, and still look, feel and taste fresh as when they were opened. Just my opinion and experiences, whatever works for you, have at it!