They will be fine. Several times when the gods of weed blessed me generously I have made huge batches and did not finish them for several weeks. Keep them cool like in the fridge or even freezer and your good. Btw stir the erb into the peanut butter as I have always reccomended and you will get better saturation and thus better absorption. Eat a portion and gauge where your at, don't eat a shit load of them and get overstoned as it is really not fun .
STIMPY21