I don't have much to add to the other answer, but:
For Ninetales, Aurora Veil over either Dazzling Gleam or Moonblast. Replace Dazzling Gleam if it is Singles, or Moonblast if Doubles.
Also, please, get Abomasnow over F.E.A.R Swinub. Have it hold either an Icy Rock, or better yet, Abomasite.
While Mega Abomasnow is slow, it's useful for setting up Hail again. This is important because Ninetales can not keep switching in to reset the Hail, and once Hail is gone, the team loses out on a lot.
Other than that, the one thing I disagree with the other answer is that you should let Sandslash keep the HP EVs.
At base 65 speed, even 252 Speed EVs isn't going to outspeed a lot of things, unless you run Scarf, which renders Swords Dance useless and hits a lot less harder.
Edit: As Runemark (Ion) pointed out, this was probably in conjugation for Slush Rush, in which case, it's perfect for it. My bad. A spread of 252 Attack / 252 Speed and 4 HP is perfect for a Physical Sweeper. Or a little mixing up in HP and Speed to allow maximum longevity and damage.
For Abomasnow:
Abomasnow @ Abomasite / Icy Rock
- Blizzard
- Ice Shard
- Giga Drain / Protect
- Earthquake
For Glaceon, Hail or Heal Bell or even Wish is a good option over Water Pulse or Shadow Ball.