Active Aurorus Build?

[Bubblrgum Goodra]

Hiya, kinda feel like breeding an Aurorus but don't know what to go for. These are my ideas so far - feel free to improve/criticize, tell me if my maths is wrong or come up with new builds. Thanks for any help in advance

Dance/ Calm Mind

Move 1: Rock Polish (reaches 472 speed after a boost?)
Move 2: Calm Mind (reaches 445 s.attack after a boost?)
Move 3: Ice beam/ Blizzard/ nature power (should be tri-attack no wifi?)
Move 4: Thunderbolt/ Discharge
Nature: Timid
Item: lum/ leftovers/ focus sash
EV: 252 speed, 252 s.attack

Choice Specs:

Move 1: Ice beam/ Blizzard
Move 2: Thunderbolt/ Discharge
Move 3: nature power
Move 4: Dark pulse/ Psychic/ Flash Cannon
Nature: Modest
Item: Choice Specs
EV: 252 hp, 252 s.attack

Support

Move 1: Freeze-Dry
Move 2: Encore
Move 3: Haze
Move 4: Thunder wave/ toxic/ roar
Nature: ???
Item: Leftovers
EV: ???

Any good? Also should a wait/ hope it's HA comes out in ORAS because I think it may be slightly better?

 

[Unproxied]

Aurorus doesn't need Speed EVs. His base Speed is so low, he just isn't going to out run anyone.

I would focus on the best stats; SpA, SpD and HP.

Aurorus @Choice Specs
Modest
Refrigerate
248 HP/252 SpA/8 SpD
HP Fire/Freeze-Dry
Thunderbolt
Nature Power (Tri-Attack on WiFi)
Ancient Power

Ancient Power and Tri-Attack are your main STAB attacks. HP Fire would take care of Steel types threatening with Bullet Punch, considering you could live one. It would also threaten Grass types.

To be brutally honest, Aurorus is kind of bad. He's 4x weak to two of the most common priority moves in the meta, being Mach Punch and Bullet Punch. This is the most viable set I could think of.

 

[Stellar]

put some defense on your Aurorus. He is very weak against a lot of types. Go with Thunder Wave, Toxic, Roar, and Freeze Dry. Then Max out HP, balance out Defense and Special Defense.