it really depends but certainly 6 months, I guess part of the issue is new FDA regulations and hence I'm thinking I should just stock up a little more
Who knows what laws will pass.
It's really extreme here in Nanny State Australia with plain packaging [that come with a disgusting pic] and 50g of tobacco now over $120.
Tobacco will either hold it's value or go up in price, especially tinned baccy.
Properly stored, tobacco keeps indefinitely and many blends improve with age.
Since the future is uncertain it would be wise to stock up on as much as you can afford while it's still reasonably priced.
There 's a wide range of decent blends that come in bulk that's far cheaper than buying tins.
If you're not familiar with bulk blends, just buy a heap of different blends that you think you might like by the ounce.
Those that you like, buy as many pounds as you can afford and store in masons jars.
Sign up for notifications from on-line tobacconists like P&C and
www.tobaccopipes.com and take advantage of sales [P&C just had a $1.75 per ounce sale on bulk blends for instance]
No such thing as 'too much' tobacco.