what monitor?

[allergenic]

Argus can easily get 7ft and need a lot of room for their high energy levels.

Incorrect. Varanus panoptes horni, commonly called "Argus", has males that reach roughly 5 feet and females that reach 3-4 feet.

Dumeril's/brown roughnecks, black roughnecks, blue tails, mangroves, and peach throats all stay in the 3-5ft range and are easy to deal with. They all will calm down with gentle handling and just getting use to you. These species also don't really need a full room to be happy either.

This is truly awful advice.

I'v got a arg b&w tegu that is about 3 1/2 ft and have been preparing to get a peach throat.

Prepare more.