Gem and enchant for as much stamina as you possibly can. If your going to be striving to tank in ICC, Dodge will be almost useless, but Parry still isn't very good. Stamina is just the way to go, it makes for less spikey damage overall.
Btw, if your going to be DWing as Frost (which is fine, I didn't take a look at your spec but you should be fine) you really want slow/slow weapons, as in 2.6/2.6 dps weapons both enchanted with Nerubian Carapace. That gives much much much more threat, equals high Oblits, etc., and w/ Nerubian you barely lose any Defense, and you gain as much stam as from SSG.
Hope this helped!
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