Disagree w/ your suggestions, but good points...
First, his Defence should go up by 3 points, so DEF: 70. He have a nice positioning and even played like CB.
Second, not sure about a boost in Body Balance. I'd personally go with up 3 points at MAX, so 78.
Third, Stamina is good like is now. Maybe can go up by 2 points, so STA: 87. Maybe! IMO he have a better Stamina than Hernanes.
Fourth, Top Speed and Acceleration maybe can go up. Not sure about numbers yet.
Fifth, his Dribble Accuracy is good as it is. He can dribble, although he isn't really good at that. Maybe decrease by 1 point.
Sixth, his Pass and Shoot stats are fine as it is. I'd maintain like is.
Seventh, his Jump should go up. Something like 80~83.
And Eighth, last but not least, his Technique can go down by 2 points. He's really "funny" when it comes to first touch. So, my final number would be TEC: 78~79.