Where to go from here?, Why couldn't Porsche just use a chassis... Options

[amphiduck]

I just stripped out all of the interior on my '74 2.0 to check out the inner longs, figuring something had to be wrong due to what my outer longs looked like. Picture of outer long is driverside. My driver door is sticking when I'm inside, and I have to put my shoulder into the door to get it open. The door gaps look good though, so I don't really know what the problem is. Also, my jack triangles are rusted through. How do I proceed from here? Buy new inner/outer rockers, jack donuts/triangles and cut everything underneath the cab out? I have a set of new floorpans, but I'm guessing that won't fix the sticking doors since they aren't very load bearing.

[amphiduck]

Thanks for all the input everyone! I tested the doors today and it almost seems like it is both the latch/hinges as well as the longs. The outside driver door handle is stiff until it unlatches, then swings freely. Driverside has drag even when unlatched. I can see where the door is dragging by pulling the paint off around the latch I took some pictures of the doors as well as measured the gaps in front/back of both doors. The results:

Passenger side rear gaps:
Top: 5.72 mm
Bottom: 1.95 mm

Pass. side front gaps:
Top: 5.79 mm
Bottom: 4.31 mm

Driver side rear gaps:
Top: 6.40 mm
Bottom: 3.58 mm

Driver side front gaps:
Top: 6.39 mm
Bottom: 3.51 mm

Hopefully some of these pictures help diagnose more. Pics 1-4 are passenger door, 5-8 are driver door. It wasn't until I uploaded the photos, that I remembered removing the weather stripping from the bottom of the passenger door. Should it be dragging that badly without it? Also, what is the standard time in hours a body guy could repair/replace longs? I definitely do not have the cajones/skill to do it myself.