If you really feel the need for an Ice move, either redo your spread and put Ice Beam on over Blizzard or use Ice Fang. Both Ice Beam and Ice Fang can work on a T-Tar especially with T-Tars massive attack stat and Ice Fangs otherwise small base power.
As for Skarmorys item, How about a Shed Shell, or Leftovers to replace that berry? Unless it cures any status ailiment, a Lum Berry would suffice allowing you to shake off any status that's put on Skarm.