If you are fine with staying below t4 with your wizard, I might suggest trying the builds built around Ray of Frost + Light of Grace source as well. While indeed nowhere near as effective as Firebird builds, it is neither as mainstream nor as demanding to your gear. Essentially, it depends only on one legendary, thus allowing to use whatever else you want for other slots. And if you somehow get ahold of Frostburns, the crowd control of "Ray of Frost" becomes nearly unparalleled.
Firebird builds themselves have a few variations. The high-grift Blizzard/Apocalypse version, the hardcore tank version that revolves around the Arcane Torrent with Flame Ward rune (requires Krelm's bracers to be truly effective) and a Disintegrate version. Pick the one you like the most.
Firebird builds themselves have a few variations. The high-grift Blizzard/Apocalypse version, the hardcore tank version that revolves around the Arcane Torrent with Flame Ward rune (requires Krelm's bracers to be truly effective) and a Disintegrate version. Pick the one you like the most.