Congratulations on finding the desks!
I'm sure you'll have lots of fun on all the space now!
If you are looking for shelves....have a look at the Ikea Linjal, glass floating shelves.
They don't detract from a window view or decorating as they are glass. I bought 2 for each side of the window wall in my scrap space. I put one on top of the other on each side....
lots of storage!