Yes, when using the P.P.D.S. the height of the framed opening should be 4 1/2" - 8 1/2" taller than the manufacturer's specifications, plus track and wheels. For more details, view installation instructions.
No, you will need to order your track hardware separately. We recommend Hafele for the track hardware.
No, you can make your own or purchase a pocket door kit at your lumber yard.