Hello everyone, I have a French Press for brewing coffee. I have found my favorite beans and I buy them in 1-pound bags at a time. I usually brew them for 12 days. I have one canister which holds 1 pound of beans. If I buy two 1-pound bags of different beans then I would have to keep half of each in its bag. Do you think these beans can keep for another 2 weeks after the bags have been opened?