You are worrying too much imo, brudda. Cigars are much tougher than they are given credit for. If they are in a good cooler, don't worry about them. The humidity will usually rise slightly when you introduce new, wetter cigars in there but they will stabilize over the next few days to a week. When you open the lid, the humidity will go down but when you close the lid, it will stabilize shortly after you close it. Don't fret and enjoy the smoke.