I wouldn't say that oxidation is ever desired apart from maybe old ale or biere de garde, but it certainly can be acceptable for big beers designed to age. I wouldn't want any in my RIS. Once the beer is done though, it's unlikely to improve a ton with aging- I would get it in the bottle and let it age there. That way you can pull a bottle every once in a while, cool it down, and see how the batch is coming.