We ordered our blinds from SelectBlinds, FWIW. The cordless/wandless ones aren't inexpensive, but they are a much heavier gauge aluminum than the blinds that were in the FW originally. I really like the clean look of no pull cord and no wand. When the blinds are all the way up, all you see is window.
Installation is easy. There are some brackets (the number depends on the width of the blind) that screw into the wall or into the bottom of a cabinet and the blinds just snap into the brackets.
I ordered the blinds 2" wider than the window frames so there would be an inch of blind on either side of the frame. That's a little wider than the original blinds were. If you get this style blind, you'll want them at least two inches longer than the depth of the window because you change directions of the blind slats by raising the blind once it's at full length.
If you had to, maybe you could remove the side pieces permanently and re-cover the top cornice.
1998 Alumascape 30RLS FW