That's a very well maintained Octi, that you have managed to lay your hands on. Congrats jeno turbo. Could you also share the details about the search for the car (Where you found it and how). Any procedures you followed to verify the car's history? Also, here are my 2 cents to maintain your ride (if you have not already done it)
1. Change the Timing belt and replace the pulley as well(no matter how good it looks)
2. Check the gear foundations/shafts and all rubber components
3. Check AC hoses
These are only a few things I can think off but I'm sure there is a lot more. Hope some experts can pour in there suggestions too.
Wish you miles of happiness. Btw, the car is a Killer.