You're gear is amazing, high t, high anni, close to perfect equip except coa instead of shako 'ber', but they are pretty equal and you still reach 48 DR anyway. Try fortitude instead of nigma for some extra damage (i only used tele on my smiter vs a selected few classes, mostly ww barbs) and charge with vigor instead of tele. You also need a sorce of Cannot Be Frozen from either Cham in a Zaka or a Ravenfrost.
If you have problem with this gear Id say you do something wrong play-style wise. Im not a super skilled smiter, but opening with a Vigor-Charge and then just Fana Smite them down worked wonders for me, the charge will probably desynch so ur look like ur far-cast smiting to ur opponent. Try using Forti instead with Eni in stash. Its kinda hard to figure out what ur doing wrong w/o knowing how u play, so if u tell us ur basic strat it'll be easier to help u

. 4k life is alot with 17 free slots in your inventory, get some more lifers, stack some resistance or fill ur invent with crap lifers, anything is better than nothing.
Edit: Assuming you hit the last IAS breakpoint (total of 55 IAS with a +35% Fana) with a zerker, which you do with a 38 GriefZ highlords and BF, a zerker is just better in every aspect, getting a Pb will make it harder vs smiters with longer range (and other classes with range 3, such as Javazons & barbs).
Edit2: I personally dont think 75% CTB is that important, even tho ALL my pvp chars have it, the extra life is good vs all classes while block only works vs very few. In pubs the only common character using a blockable attack is the BvC, and as a smiter you should p00n him pretty easily with nigma.