Is my plan to safely remove asbestos siding sound?
WHAT...??? You can do this. You’re working on the outside of the house so you don’t need a tent or fans. (They have the fans going the wrong way anyway.  If you were working inside the house, you want negative pressure not positive pressure. This is obviously not their forte.)

Keep it wet and try to do it without breaking it. 

Stop by an asbestos abatement company and pick up a few disposal bags and find out how much it will cost you to have them dispose of your pieces of siding.