air pressure and installed height for dominator 2600 bags

[Blackpony]

I am getting ready to begin building a 4 link on my 85 c10. The one thing I have not figured out just yet is what air pressure I shiuld be looking to run and what the installed height will or might be so I have a starting point for welding the brackets. I chose a set of 2600 dominator bags with hopes of decent ride quality and the ability to level the truck with a load. I plan to just use schrader valves one on the rear and one for the front. I dont need anything fancy just want reliable.

This is my first rodeo dealing with air bags so any insight or suggestions are much appreciated!