It will take 3-4 months (thx to COVID and Eastern Europe to North America container ship shipping) unless you purchased from the Canadian reseller who may have the finish you went with in stock.
That was also my understanding. There are even pockets for those last fins to go over the OE ones. I believe kpeng didn't like the busy look with so many fins (agreed that 2-4 less fins would look better) and assumed the side pieces would extend out (they dont, there is a separate part for that for those who want it).