I have an iPad mini that is approximately 5" x 7 3/4" with which I want to use an external keyboard for word processing. Some time back I bought a Logitech wireless keyboard that is the same width (7 3/4"), but it is too small for my fingers. Where can I find a wider keyboard (9" at least) that will be compatible with my iPad, including having a slot or stand that will hold the iPad easily?