Understand you. Hard copy evidence is incontrovertible....at least in my book!
Yes...of course! I would even encourage it. Until they have processed your application, you can provide whatever you feel is necessary to support your claims. The good part even that you can email scanned copies of all of these to CPP-O....and not waste time sending by post.
Its not over until its over....so do what you need to do. Every little bit helps, I think. In the meantime, some other ppl on here might come up with other ideas to help.