Weight will be about 120 pounds of pipe and water, wire at maybe 40 pounds, and pump maybe 40 pounds. About 200 pounds plus any drag on pump-to-casing. The total weight will be only slightly more than if it is poly pipe.
The PVC pipe can be brittle and you risk dropping the pump if it breaks and the shock at the end of the tether tears away the safety rope and wire. Keep them snug when lifting so they won't break from the shock if something breaks while hauling.
Holding 20 ft of 1" PVC full of water in the air while you unscrew it might get exciting. Unless you have a use for the pipe, the Sawzall method to make shorter sections might be easier.
The 1" PVC may bend enough that you can treat it like flexible pipe. I have never tried it. If it breaks, it will probably be at the top of the casing so I wouldn't count on it for lifting. Also, if the bent pipe breaks the broken end will straighten out and extend like a spear, so stay out of line of the plane of the bent pipe.