Lift definition question

5.5" Rubicon Express suspension lift,
Does it mean the longer coil/shock absorber

1" body lift
Does it mean additional lift from body to suspension

By the way, how do you usually judge the mechanical soundness. Do you have a checklist?

Altough wrangler is built tough, but age still counts,
according to your experence, at what age does the wrangler gives best value/cost ratio?

Also, since my area is quite humid, I am really concenred about the rust condition or engine that
had taken some water in before.
How can I make sure on these issues.

Finally, may I ask you something about your wrangler?
If so,

did you get it new or as a used one?
what year/mileage when you got it?
did you check the wrangler yourself or you had a mechanics help on this.