With large objects and a small studio, you might not even be able to use 50mm - depending on how small "small" is. Might want to leave a little space around the chairs so that the graphics department laying out the catalog has more options to work with, too. Depending on what the background is they may or may not be able to easily clone in more background - but this will make their job easier.

I agree with John that perspective distortion (not what you're talking about) can work to your advantage, and that with that camera/lens combo you probably won't have to worry much about the distortion you are talking about.