No. Both are problems.
RMS costs around 1500 dollars to upgrade to the 997 version.
IMS you have no idea when its going to go, and there is no perm fix for it. There is the retrofit kit but its not that proven.
For the RMS and IMS fixes your looking at close to 5k in parts in labor to get it done.
Don't buy a 996.
The RMS really isn't much of a problem (oh no a slow oil leak I'll have to keep cardboard under it to save my floor's finish!) and it's easy to fix since dropping the transmission takes no time at all.
For the IMS, the studies of the failures lead to a pretty clear cause and effect, and the retrofit is a rather good solution. It's been a while since I've looked but so far as I'm aware no retrofitted car has had a failure and it's been out there for about five years. Porsche's initial IMS bearing was a shitty sealed design with captive grease where the seals broke down with time, allowing oil to seep in and displace grease/deposit dirt over time; the revised bearing is open and is designed to use the engine oil (I think, been a while).
It's a rare failure that's more common on garage queens, but it's a very expensive failure so it scares (rightly) people. It wouldn't dissuade me from getting another 996 but it's not what I'm looking for nowadays.
Edit: Porsche has a thing for sealed bearings. They do the same thing with transmission bearings, and all the Porsche techs I've talked to always suggest going with an open bearing instead.
