I play a build similar to yours but with arcane mines instead of disruption, they have a good sinergy with temporal flux and mobs are slowed 60% all the time, it allows me to swap to my 360 MF every pack
For weapons anything that seems like a small difference can actually be a big one. You really have to do the math to figure out what would make sprint do the most damage.
Ignore LOH on your main hand. You don't need it and at an equal budget it'll lower your damage by a lot. 800 LOH is more than enough, especially if you have life steal too. Just get enough resists and/or armor so your LOH is effective enough.
Like this build. Played on that build. ( my english so bad )
He right.