DOn't use 2os bonevisage. There's a better build, that my wwsin used to use, i don't think anyone else uses this, i made it up. Use a 2os gskull. Knockback gives you more hits, you can put 2 psn facets in it, and it adds 30 some str, alos, it has great def and 10% crushing blow is nice. This build is better than shako because it makes you look cooler, and it gives you the str you need to wear shadowdancers. And you get 2os.
Also, Use angelic ammy and 1 angelic ring. You max wpn block, fade, venom, and claw master. Weapon block doesn't need dex to get block rate higher, cause its a skill(as far as i know). So you don't need much into dex. Most likely your ar will be low, so the angelic can helpful(with the 20% mana sorb). For the other ring, use either raven against cold sorcs, another anglic, or an soj (Because ww takes a lot of mana)
For armor, get an archon bramble 40%+. Trang gloves i agree on because of the 25% psn mod. Belt dungos is fine. And if you're not really rich, instead of fury get a shadowkiller and put an eth rune into it. For weapon switch, you can either get a cta or Shadowclaws. I prefer Shadowclaws, because you won't be getting many skill points no matter how high the cta is from your gear. Shadowclaws adds alot more dmg and you can buy them from anya in hell.
And what you said about needing foh for casters, Wwsins are pretty much nicknamed cast killers. The people i've had trouble dueling with on my wwsin were Hammerdins, Fohers, orb sorcs, barbs(Even godly wwsins can get pwned by barbs with like gf most of the time just because they have wcry advantage). Another buld that can be a problem are rich energy shield sorcs with cta, because they can take lots of hits. Against zealers, its pretty much 50/50 chance of winning, because he has to hit you while your wwing. Against fohers and orb sorcs, the only problem is with them is foh they run around, and when you Dflight them, they run the opposite way you ww and doge it, then foh you, and your basically dead. Orb sorcs are hard, because even if you get in the range of dflight, there orb will most likely kill you as soon as the sorc is visible on the screen.
If you like the guide, please give me a rep point, took my a while to type out all of this.