Still can't tell if this is a salvage job.
To make money you can't waste time. Gotta get down to the good wood. I'd rent a big High Pressure washer and blast the heck out of it. It will dry out fast once the pithy wood is gone. Then you'll know where the soft rotten spots are. You'll waste time scraping. It's going to take a blast to get down to the important area's
When shooting photo's with a cell phone, keep it level. Otherwise export it in photoshop to rotate.