I may not risk my bottles of Darkness this way
Why not do a side by side with your Darkness? Or do you not have 10+ bottles from the last 4 years like me (should be a fun vertical for their 10th anniversary batch)?
And for a bit of useful advice, Oxygen isn't the only problem. Do what you can to protect these from light (mainly of the UV variety). There is a reason that beer and wine have been traditionally stored in cellars. It's dark down there!