For a tank that size, multiple hides and fake plants for cover are a necessity. The key to success with larger enclosures is having correct husbandry and lots of places to hide. I wouldn't say it's impossible, but it is more work than a small tub -- more space to work with.
Regardless of what you decide, having your setup up and running for a few weeks before bringing the snake home is good practice and allows you to confront any issues.