Would I have been better off not knowing?

Just got my Duster back from sandblasting. In addition to the front frame rail damage/rust that I already fixed and the driver's floor plan that is in bad shape, I was a bit surprised to see how much swiss cheese was lurking under the paint.

I assume there's nothing to do but weld in new sheet metal? It looks like AMD sells lower quarters, but not sure what I should do on the hood? Just cut out some sheet metal I have laying around and weld it in?

I'm a bit annoyed by how dented up the bottom of the car is. Some will be fixed with the new driver's floor pan. Should I just ignore the rest?