I echo what the others have said. I have a 67 convertible, luckily mine was my dad's and a SoCal car.
It was his daily driver with 300,000 miles
No rust to speak of.
Looks like you have most of the trim, rockers are hard to come by as are some of the clips.
Luckily many 68 and 69 parts swap over.
Do you have the rear plastic on either side of the rear seat? That would be a tough part to find.
Good luck and I hope you decide to take on the project, but if you get in over your head don't let it sit in the weather, sell it or give it away.
