You can ASAT direct off the web site www.asatcamo.com or me

As mlaubner said all you will need is the 3d suit comes with a top with a zip up front and elastic at the wrists pants with snaps and zips on the legs and a full head net.

As for a tree stand that depends on if you want a fixed or climber.

A good fixed is the Gorilla Silverback but you will need a set of climbing sticks or screw in steps.

As for climbers I have heard nothing but good about Summit.