Be careful with this... "G2" is Fisher terminology, not Fox. The 51mm offset forks are still only available to Fisher. If this fork is new in the box, my guess is it's a standard, 44mm offset. You might ask the seller.
But... The 44mm offset really wouldn't be that bad on the Paragon. It might handle quicker at low speeds than mine. FYI, your Reba has a 38mm offset.
Stick with 80mm.