Guys, I had my consultation with Dr Giotikas, all went as expected, he answered my questions properly, took the time, and was very attentive. He measured the proportions with the Athena' method he invented, and I changed my goal from internal femur (Precice 2) to TSF tibia first, and after Stryde (5-5 or 5-6 sms, my starting is 171 cm), so 4 segment surgery will be my option. The hospital is quite modern, cosy, as someone described earlier, it seems to serve high standard care. As I'm planning I will start this July, and in Dec-Jan Stryde (according to my recovery and Stryde availability). I met two of his patients with Precise femur, looked fine, are in the early phase. So basically he seems to be a good, safe option.
When my surgery approaches I will stay away from the forum, not willing to report or so, or answer questions. I think the basic infos here are treasure, but all additional personal projections are far more negative, and I personally find it contraproductive in terms of my recovery. Good luck for everyone!