I'm pretty sure these are the plans that were used to build the Rhinebeck D.VII, If so, you should be able to build a first class replica with them. I hope your welding skills are up to snuff! *
I know these plans have been around for a while and several aircraft have been built, where they all are today, I don't know.
Look up Dave Watts on this forum, he is working on a D.VII of his own, he should be able to point you toward some valuable information.