Mr. Hubbard is known to be a gentleman.
I assume that the plug he is sending you has a hole (which is probably drilled) which fits the 209 primer, which just drops in. The nipple for the #11 primer would screw into the hole (which is also tapped), the #11 primer would fit over the nipple.
The ramrods for the Huntsman are telescoping. They extend out (to load), and retract (for storage under the barrel).
I would recommend that you ask PHATINJUN, about a good load for the 45cal, since he regularly uses one to hunt with. Quickdtoo, or bubba could also most likely help you with this.