Going to Jump into it head First

[68Gold/white]

I can't help you with any expert advice, BUT!!!
On the old Overhaul'n show, they "Overhaul'd" a 67 C-10 SWB stepside pickup. A VERY cool build!!!
They removed the gutter, entirely. One piece of advice they mentioned during the gutter work, was to only cut off 12 inches or so, at a time. It made it easier to weld back up. They said something about the roof metal gets out of control if you cut all the gutter off at one time
If this info can help you......
Looking forward to your jump!