That is pretty darn bad on a common car body; it would be some long hours but not impossible to swap everything over into a much cleaner body.
Or check out the good recommendation by vsech...
You really need to be good with a welder to even get started.
though cutting good donor parts off will work for most areas!

I might be interested in the passenger rocker cap if you want to recoup some of your parts expense?
My euro wagon is close to this bad on 1 side, and after paying good money to a body shop I still have much to do!

Headliner: I pulled a clean one by myself from a yard for $40. Only trick is to push out the rear window and slowly pull the glued end off that upper lip.

If you need a hand or hint pulling off any small parts, feel free to PM me.
Now putting them back together...I still need to master that skill

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1990 300D 2.5Turbo, two tank WVO, daily driver 300,911
1992 E300 gaser, 150k. Parts only, For Sale

[B]1984 300TD Euro 4speed Sold
1977 300D Elsbett SVO single tank Sold
1981 300TD "Silver bullet" 285k ran B100 Sold
1981-5 300D x 5 cars stripped and reused, parts for sale

Other toys:
1995 Dodge 2500 Cummins 12V P7100 Bosch mechanical pump with 2 tank veggieconversion kit, only 120k!
1959 Cadillac Dad's legacy, needs finishing