Badass team. I'd probably put Higuain instead of Totti and convert into 4-3-3, otherwise it's good.
I'm not sure about one thing, though. We were good defensively this year. Eventhough Buffon had a clean sheet for over 700 minutes does he really deserve to be there? I remember him once or twice only when he had a great game but other than that he had no job. Same goes for Morgan De Sanctis, he had over 700 minutes with no goal but it was due to great partnership of Benatia and Castan. On the other hand, Perin had too many saves so far in the season, I'd easily consider him as the best GK.