It is not a "queezy tummy" that would put me off, but a tired, old 1970's C152 which has been abused as a training aeroplane all of it's life.
Spinning is very gentle on the airframe. It's just a stall, then a yaw. After that the aerodynamics take over. Of course you *could* do it roughly, but you don't need to. The same applies to the recovery. Recovery from a spiral dive can be much tougher on the airframe. Of course you have to get into the right manouvre in the first place, I found the Decathlon hard to spin when solo, it tended to go into a spiral dive.
n5296s