I've wanted to do this for years!  Just never had the space.  There always seems to be windows for free or cheap in the classifieds.  I thought it would be perfect if I could get a big sliding glass door for either end, especially if they came with the screens intact.  Would save installing a fan, although I would think they might be more difficult to frame in and they're a lot heavier to deal with than the smaller windows.  I kinda like the 'patchwork' effect with the mismatched windows though.  Adds character!