Francis Cosquieri is a reptile keeper out of the UK and is a literal reptile encyclopedia! He maintains a collection of 170+ reptiles and does so with some very impressive self-imposed rules. Most notably, every snake must be kept in an enclosure at least as long as their body, and all animals must have access to UVB. If you believe the only way to keep a large collection is by racking & stacking, then this is a must-listen!
Recommended Snake Enclosure size: https://youtu.be/x2MbV2P86rc