I recently got FCPX and want to venture into the 4K videos. I have a novice question related to it. With 4K footages, I plan to down sample it to 1080p in most cases. Instead, I will use the 4K footages for cropping, a little panning, and stabilization. For that purpose, should I make a 1080p project or a 4K project and export it to 1080p? Would 4K footages blend well with 1080p footages?