Hognose snake question

What would you say is an appropriate size bin for a male plains hognose snake? I’m thinking about picking up a subadult male hognose at the December Hamburg Reptile Expo and starting him off in a bin, but eventually upgrading him to either a zen habitats 4’x2’x2’ or a dragonhaus 3’x2’x2’ depending on his adult size and what seems appropriate.

With hognoses smaller is better, here are some useful posts that have enclosure information.