I was wondering which (if any) of your resins would make a normal piece of 80gsm  A4 copier paper the most transparent if it was used to make a thin sheet...just a single piece of paper and enough resin to soak into it. I thought maybe one of the laminating resins was the obvious choice, but thought I'd ask...

paper usually only gets opaque. but there are copy fleeces commercially available, wich you can print on, but wich become almost glass glass clear, once wetted out with epoxy.