I had a 982 718 CS for a couple of years.
Other than engine most of the features are the same.
If doing it again I would also look for a 981 as you are.
Shifter cables were changed but I don't recall if it was for the 981.
Either way, it is easily rectified with cables from
Numeric Racing.
Yes IMS was resolved for 981.
One thing to watch for are active suspension components if so equipped.
(active motor and trany mounts)
They run more the $1500 each if they fail.