terrarium size

So i have one emty selfmade glass terrarium. And im thinking to put some snake in it. :) Recomended cage size for ball'er is ''36x18x12'' ,but i have 32WIDE x32HIGH X20 DEEP (inch) So yeah... :) Will baller fit in?

Ball pythons really dont need height they are a ground snake that climb if they have to but don't need to. It would be better to find something with more floor space (for example mine is 48x24x12 and each snake gets 24x24x12. Plus getting heat source down 3 feet is harder from what I read..