I checked my 100% peated malt yesterday. It is 19monts old on a recycled Jack D barrel stave. Peat comes through nicely, some iodine as well. Tails has all but dissappeared, and been replaced with the iodine taste. Still no where near Ardbeg.
To answer your question....
I would try smoking more ingredients, in the pursuit of authenticity. With smoked malts virtually all the flavours seem to become more pronounced with time on oak. Tails are very important and thus time is required. From memory I kept down to around 72% on my spirit run where normally I would have cut it around 76% abv.
More tails=more smoke=more aging time (to a certain point)