Can the evaluation be on the blog too?
As much relevant research and planning evidence as possible should be on the blogs, if that is what is used. The evaluation questions should be explicitly addressed at the end of the project, which could also be on the blog, but should be clearly flagged up as the evaluation. There are good examples linked here.
If paper R&P is used at AS, try to keep the size of folders down- paper only rather than big binders. Leave out piles of questionnaires and just send one rather than sending them all!