I've got 5 gallons of apple wine in a 6 gallon carboy. I would like to oak it before I bottle, but would opening it up before bottling time be too risky? It's full of CO2 now (I haven't touched it since I first pitched the yeast, except to degas during the first week), but that is a lot of surface area exposed to the air if I open it up to add oak cubes.