My Water/Cold is in his 77's. I do TFs, Examplar lot, and ITrials.
I'd suggest Snow Storm and Frostwork.
Snow Storm is great for AV fights, keeps them slowed, in place, and hitting you less. Plus any foes that join the fight get debuffed as they get close. You can also use it to ground mobs of fliers which can be very handing, since Sleet can't get that far up in the air, nor can whirlpool.
Frostwork is pretty good at giving some Extra HP to a Squishy who you want to help keep alive, or to a Meat Shield who's having issues staying alive.
IF not, Most teams can make use of Manuvers and Tactics, just keep in mind they are as End heavy as a Travel power.