Hi Dave, I agree with your thinking.
Don't worry, you're at the top of the list for an unrestored car. I picked up another project Z that is on ebay now and have another couple in the works. One is spoken for to a friend that I owe a favor to, but I'll pass along info on any that I think you might be intersted in.
Would love to see the RS Z done, I think it will be a very cool car