I know it's off topic a bit but have you considered a tegu? Some grow to an imressive size without being too dangerous. If you are going with a monitor I vote for an argus or dumerils (one of my personal favorites)
I would steer anyone away from a Tegu who was looking for a "Display" animal. They can make amazing pets for someone willing to offer them space and attention, but they are social animals and would be miserable locked in a box 24/7.
I would steer anyone away from a Tegu who was looking for a "Display" animal. They can make amazing pets for someone willing to offer them space and attention, but they are social animals and would be miserable locked in a box 24/7.