I agree he is the best in Greece in terms of ST, 90 imo is just not realistic for him or anyone in Greece. For me he can have an 86, which makes him by far the best and on par with guys like Keane, Nilmar, Mutu, Klose Vucinic, I think it is a fair value for Cisse.
Now about accuracy, it is not his best value when it comes to finishing, he mostly relies on his awesome power and technique to send the ball anywhere out of the keeper's reach and into the net. I believe a raise in 77 - 78 is reasonable, also he has *Scoring which can make him nab them easier.
About his passing, I can't say I disagree with your values, even though the current ones are not that far off from what you suggest. I do disagree though with teamwork, guys like Cesarec or even Blanco can link up their teammates better and more often than Cisse does.
Mentality can go up to 79. He did make some improvements probably he is equal to Mitroglou or Muslimovic
Also the suggestions for WFA/WFF are reasonable
Having some general ideas and will start creating some teams