Fighting WW dragons -- worth sacrificing stat gear for resist gear?

[Malrubius]

Sanity check here. For a torpor Shammy (or any class I suppose), when fighting WW dragons such as Bratavar, Ayillish, etc, is it at all productive to swap out HP gear for CR gear?

Or is it advised to just keep the HP's/AC/Mana as high as possible? It seems to me that the added HP's would more than compensate for the damage (500 max?) of their cold AE.

Yes, I have insta-clickies to keep my two top slots refreshed against the debuff portion of the AE.

Thanks...