I say send it out! Your not having it slabbed for resale but for your own likes. I would make sure it grades at least within top 3 tiers. (68-70) Personally I'd only send mine out if I was sure they would fall in the 69-70 range. The additional fees are pretty costly. That brings up the question, is their enough interest, I had the intentions to say, Theirs enough attention for each release to of sold out, But when I just checked. Grand Canyon is still available, along with Mt Hood. Say they don't sell out, I'm sure they would reduce the minting numbers on any future release. Creating a buzz that brings a lot more attention. Either way IMO, their time has yet to come. At some point their going to become highly desired.