Cutting cast iron - is it difficult? | Terry Love Plumbing Advice & Remodel DIY & Professional Forum

In order to get a pressure test done on an addition (two bath, laundry), I need to seal the drain piping, and this location seems to be the least disruptive. How difficult is it to cut cast iron? Would a rented soil pipe cutter be up to the job? Should I buy one?
I intend to replace this cast iron (installed some time around the last ice age, I'm sure) with PVC.
Thank you