The top fabric may give you a bit of a problem. It has a clear geometric print, and when cut , even though you can be very careful and have the exact measurements cut... the fabric may appear that it was either cut or sewn a bit wonky. This would happen if the fabric is not printed true or the print is slightly off the print from the layer below it.
The other fabrics a perfect, I would use a white for the "sashing". It would really show off those fabulous prints.