binding stance for jib board??

I just bought a rome artifact 1985 150cm and the 09 rome targa and was wondering how to set up my bindings for jibbing? Like the angle and the distance apart they should be and anything else you can help me with

Wide and duck. As wide as you can make your bindings while still comfortably being able to bend your knees to 90 degrees or more, and duck to where you are comfortable. 15 15... Hard to say considering we don't know how tall you are..

I'm 140lbs and bout 5ft 8

I am 5'6 120 lbs.. I ride my jib board at a 15 -15 duck, and 20 1/2 inches instep to instep.. like I said, stand on the board, and go as wide as you can, while still comfortably being able to bend your knees to a 90 plus.. you do not want to feel any "pulling" on the outsides of your knees thats how you hurt them.