Air bags and weight distribution--which comes first?

Campin LI wrote:
snip....Your goal is to get the front fender height back to where it was before you hooked up, but not lower.

Within the last several years, most of the manufacturers have revised their specs and suggest the front height (with bars attached) be half way between the unhitched height and the hitched height. In other words.

37" unhitched

39" hitched without bars


Your goal front height in the above scenario is 38".