Well I just went out & did it this evening. Was all of like 15 minutes with aircraft snippers, pliers, hackwaw & screwdriver. I'll make a writeup about this at some point. It is half as much a lesson in what not to do...don't pull hard on the bracket when its welded to thin metal!
Probably the best way to do it... It's not gonna be perfect, but I think your approach was right. If you need paint, I bought some little cans of Alpine White at the Pep Boys. The paint isn't great, so buy a can of the clear and cover it with that for sure.
The disappointing thing is that this paint has no hardener. So, I managed to paint my entire engine bay with the stuff and so I've got to be careful with it now as if you look at it funny it will chip.
For a small area like that it should work fine. If I were to do do it over again, I'd have painted the whole damn thing with Rhino Liner and been done with it. At this point I don't care enough to do anything about it.