Next week I might record a due vocal/piano in real time. It's going to be a YouTube video, so I need to take the video shots into consideration as well. I have a pair of KM184 for the Piano which I've tried many times before, so I'm familiar with their sound. I also have an AKG414 that I've used with many vocalists in the past. The only thing is, I've never used all 3 mics with a vocalists and pianist in the same 'relatively' small room. Any tips?