Welcome Alex,
Your convertible's engine bay looks spotless. You can be proud of your restoration project. It's a labor of love. I also started out like you with wanting to only repair the rust behind the rear wheels and reupholster the seats. 12 years and thousands of dollars later, I completed a total body off the frame restoration. It's difficult to know where to stop, so I ended up restoring every nut and bolt.
Post some more photos when you have a chance.
John Egel