If you happen to have a really close friend or family member, I would have them do it. Say you bought some off a dealer trying to get rid of it fast, and they sold it to you super cheap. Cut him in by giving them a decent amount (for their time).
I wouldnt wanna put it in the freezer until it has cured fully.
I mean you could put them on a dry rack, they would be far too dry, but add a humidity pack, it will just take a lot longer for then to cure to the almost same potential... better than molding.