Proper Cutting of Rear Quarters?

Hey Guys, I was hoping to get some advice on where to chop the quarters on my 1968 Chrysler Newport. We are going to the junkyard (Ayottes) that has many C-body's soon and I am hoping I can get some sheetmetal to repair my vert. I want to take as little as necessary to keep costs down.I have a MIG and a plasma cutter. Here are some photos of the existing situation.Thanks!
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Author: Mr onetwo