Youtube Partnership,

Well, would just the video get the partnership or your whole account? If it is just the video, I'd say don't bother because everyone has already seen it and it wouldn't make much money. But if it is your channel that gets the partnership, you would make money from all of your videos, and future ones. That is something to consider, but really it's your decision as to whether you want to make money and be restricted in your creativity, or be able to do whatever you want, but make no money whatsoever.

I'd have to say maybe try it on one video, and then based on the amount of money that video makes proportional to the amount of views, make your decision from there.
Oh, and if it is just that one video, you might as well not do it, unless you foresee said video getting a ton of views out of the blue.