I agree that it looks like duplication, but the reason I put things twice is that the bottom part is for editing metadata. I will probably put two tabs where it says
Book 3 above the book cover. The first tab wil have what is currently shown in the right bar in calibre, i.e., cover art, comments and available formats. The second tab will be an
edit tab where you can edit metadata. I am trying to eliminate any and all secondary windows. I'll try getting a mockup done fast.