I don't disagree with you, but.... I think the OP's estimate of $6,000 to get a $1,000 airplane flying is WAY optimistic. In all likelihood, after the airplane is restored, just the first annual inspection will probably run about half that.
On the other hand, $1,000 is basically nothing in aviation. If the OP determines the plane cannot be economically brought back to flying condition, he can get much of his money back by parting out the airplane.
Ron Wanttaja