Where is the hinge adjustment at the body or at the door? And rockers or doorskin 1st

[J_T]

Hi, my Jimmy has light rust compared to what I've seen but i want to replace rockers and lower door skin. My gaps are pretty good and just put on new body mounts so was hoping to tack in panels using surrounding panels as reference... But I think it would be easier to replace the lower door pieces off the truck. Please confirm my memory that there is adjustment in both the hinge at the body and at the door, correct?

Secondly, if you were in my shoes, would you replace the rocker panels using the lower door Gap as a gauge before I removed the doors?