Not sure how old the one I smoked last night was. It was part of a 10 pack so I don't know when it was boxed. I'd assume CI moves inventory pretty fast though so I'd bet mine is probably around the same date as yours if not a bit younger. I've only had it for a couple days and it tasted great to me. If they get better with some age, I'll be even more pleased with them.
Spark one up and see how it goes.

If it tastes green at all, just let the other 29 sit for a month and try again.