1st, not enough Str.
2nd, why blackthorn chest?
3rd, off hand without socket.
Blackthorne's chest is a good chest if you're on a budget. IK is better, but it's not worth it to buy a cheap IK (ie low VIT IK chest) since you NEED the VIT on a chest piece when you're on a budget.
The legs are OK (not a huge fan) but the 2pc is pretty solid.
Anyways, I'd really recommend that you grab a str mempo helm. You'd lose a bit of crit but gain 8-9 IAS, maybe a bit of str, but most importantly 70-80 AR. Then I'd replace those bracers with some Lacunis to get to 24% MS. Also, get a better offhand. The damage on your offhand does not matter much for WW spec (for paper dps or tdps either) but the stats do. Missing that socket for extra crit damage just for higher dps is a bad idea for an OH. If you've got a bit of cash take a look at some Echoing Furies. They're probably the best WW OH in the game because of the +APS bonus (pretty much ANY Echoing Fury will give you at least one more breakpoint on each weapon). I'm using one as an offhand right now and I only spent 800k on it, but it was still a big dps boost, even without the socket. If you can spend a bit of cash then you can get a socket, str, and life steal, or socket, str, crit damage.
Pho is right though, your amulet is garbage. You want at least 2 dps modifiers (ie IAS, crit damage or crit chance) plus str/average damage if you can get it. I wouldn't spend the money on a trifecta until you can actually get a pretty decent one.