League of Legends - Just can't kill this Anivia

You know, over the years that I've played Anivia. This build has been standard for me and will continue to be this way

I feel that this build gives more AP than I remember it was a little bit over 900AP once I complete zhonya, rushing then getting and seems to be enough to get you through the mid to late game. Of course if i was dying a lot i don't think it would be very viable because you would need to be positioning yourself very well so you don't get focused on, however enemy team will probably try anyways lol. Tell me what you guys think or what kind of builds for other anivia players out there! :D