I think you panel patch idea i good. BUT, .make sure the patch is nicly cut and the the rivets have a good pattern. You can do a great job of it wit Olympic rivets. DO NOT use silicone sealant. Use the recommended Vulkem (or gutter sealant.) The rear curved cap, I'm afraid, has to be replaced.....or straighten it the best you can and live with it. A good story about how you got that "War Wound" will go a long way to making it more acceptable.
"If it can't be reduced, reused, repaired, rebuilt, refurbished, refinished, resold, recycled or composted
then it should be restricted, redesigned or removed from production."