914-6 Long Repair -Am I nuts to tackle it myself?, Any Minnesotans with firsthand experience? Options

[vintage914racer]

I always knew my factory 914-6 had rust lurking under the rockers, but I didn't want to investigate for fear finding something bad. Last winter I bit the bullet and pulled the outer rockers. As is likely customary, I found a bunch of moist debris that had accumulated around each respective jack point. After close inspection with a screwdriver it appears that only the outer sheet metal needs attention. I know this thread is worthless without pictures, but humor me... There is an area measuring roughly 8" x 4" directly surrounding the passenger side jack post that needs replacing. Am I nuts to try to tackle this myself? I've done some welding and have a welder, so I am not averse to doing it.

If the collective experts think I should tackle it I have a couple of follow up quesitons. I assume I should pull the engine and trans to do this? Is there anyone in the Minneapolis area with the support bars that span the door area?