.4 is fine. I have a .3 and have never tested a .4 to see if there is any noticable difference. I believe what I have read in the past is anything .6 or less is good for Ku FTA. You will most likely have a rough time finding an
installer for this type of system unless someone here lives close and is game.
Most everyone out there has gotten out of the steerable dish market and those that remain are big dish people. They simply are not familiar with this type of system.