Cold Witch questions before OB

Get elemental damage nodes since Freezing pulse does not do physical damage, it does cold damage.

CI is getting re-worked so that it's more balanced, it's a beta, there's no such thing as a "nerf" here ^.^ That being said, I think even the changed form will be viable if you adjust accordingly for it (i.e. picking up a few more ES nodes)

Personally, on my witch, I work over to the Templar tree and pick up the Armour/ES passives and wear Armour/ES hybrid armour (I like having enough armour to mitigate a bunch of small hits and at least part of a bigger one) I also stack HP and ES instead of going CI, though if I wanted I could pretty easily respec my heath nodes for ES ones and go CI with little problem.

If you have a specific passive tree in mind and want to link it, I'm sure we'll all be willing to give it a look and help you tweak it ^.^

Using 3 more points and optimizing your general outline a bit, this is what I came up with.
(some of the things you did kinda baffled me, like getting the whole ES/HP cluster at the start of the Witch tree and *not* getting Arcane Focus (18% ES), not getting Throatseeker when you're only 1 point away, stuff like that)

I took away the Resistance nodes because with a good kite shield you can easily cap your resists (if you have a bit on other gear too, and especially if you run Purity).

For gear, a high Spell Damage + Cold Damage wand will help you tremendously, a kite shield (for the all resist) is a must, in my opinion; other than that, getting 4-L Helm, Boots, and Gloves will be very helpful for Auras/Spells, the really good 5L/6L chest isn't as much a priority (and they're pretty rare, so don't build around needing one).

I would stack as much HP and ES on your gear as possible while keeping your resists high, then focus on damage-increasing stats (cast speed, elemental damage). I play Hardcore, so I always advise having a ton of survivability first, damage second.

Edit: Inner Force increases the potency of your Auras, so I think it's a good investment since you pass right by it anyway. (example: if Discipline gives you 100 ES, with Inner Force it gives you 130)

No problem, I just hope I didn't really mess any of the information up ^.^
(if I did, please, someone correct me)