I would use x code ford springs and this hanger kit for the front, and their box kit (pitman arm, swaybar pieces, and drop brackets) and bilsteins and then sell your complete kit to get some money back, or you could reuse your parts and hope to sell just your springs and for the back probably 5 inch rear springs and bilsteins.
http://www.iconvehicledynamics.com/...50-{47}-F350-4.5"-Hanger-and-Shackle-Kit.html
http://www.iconvehicledynamics.com/...50-{47}-F350-4.5"-Hanger-and-Shackle-Kit.html