There is no such thing as the proper pressure. it is adjustable for a reason. The more pressure you add, the firmer the suspension and vice versa. it is completely up to you. That is the beauty of the adjustability. With that said I run mine at 185 at all four corners. It is tight but not too much. The ride is great and it handles amazing.
Pressure in the cannisters acts like dialing in the spring rate in either direction.
Check the thread above for details...