Yeah myself I wouldn't risk disputing and appealing. I played with fire doing that during my early days and got a couple strikes for that. I was lucky to not have my channel shut down before it all began. Basically any copyright claims I just leave those alone because these days I realize it's not a big deal. All that happens is the claiming party monetizes the video and since I'm not out for the money anyway I just let the creators take what they want.
No point really deleting the video either unless you think it could cause some trouble for you down the road.