20,000 is way too many. The 2015 proof silver dollar has that mintage. And it has a long-time specific collector history.
Also, the silver dollar (~ 3/4 oz) is a better intrinsic value (~4x bullion for SD v. ~4.5x bullion for this series).
Maybe the canoe gimmick is going to help (like the duck call), but the coins seem destined to sell below issue price.