It's not just monitors that you have to concern yourself about. And even working monitors will be hard to deal with since most people won't accept just any CRT these days. Things like 15" and smaller CRTs are not going to have takers. Even 17" CRTs will be tough to give away.

You'll probably find that you'll be parting out stuff in order to get more money. People will pay more for smaller bits because they don't want to get a bunch of trash along with what they really want. After all, they would have to pay for that trash and pay for the cost of shipping trash.

You should probably be finding people who will take scrap metal off your hands, and be prepared to strip systems down to scrap metal. The plastic bits you can probably just rent a dumpster for. Things like circuit boards though you'll have to find a way to dispose of properly.

Also don't expect the city to not catch onto what you're doing. It may take a few months, but they will eventually recognise your face. Be prepared with a backup plan for that.