1. I think at your current dps, an emerald instead of ruby may work out better for you, but that's personal preference.
2. You could probably craft better shoulders rather than buying Vile Wards.
3. Is that Locust Swarm SoJ really necessary?
I think the biggest thing right now is your life. You could use a bit more if you really wanted to play it safe in mp10 runs. You can do it pretty easily crafting gloves with vit, getting a Witching Hour with vit (I'd do that first) with similar stats to your current. Your WD looks really good and well-rounded. I'd switch the SoJ out for a Unity if you like to farm a lot, though. Also, you could definitely get a better Skorn/Tal-Rashas ammy, but those will be expensive.
1. If you want to feel comfortable doing mp10, there's some easy switches you could make. It's become kind of general knowledge that a Skorn is way more viable for mp10, primarily because of the lifeleech, and it helps with mana too so you can take that Spiders skill off (which is a waste of an otherwise important skill slot - Pestilence, which is important for gathering all the guys to you to be able to kill them easier).
2. It's also become a sort of agreement (or at least from what I've seen) that crafted bracers are much more viable for mp10 than Lacunis. A lot of people worry about losing the movement speed, but it's important to remember if you get pickup radius on 2 of your slots, your Spirit Walk will be up pretty much 100% of the time (not exaggerating) making movement speed kind of useless.
3. Which brings me to my next point. Pickup radius - you have none. If you read the description for Grave Injustice, you'll realize pickup radius on two of your slots is going to make you into a beast because some of your skills are going to be up 100% of the time (like Spirit Walk, mentioned earlier). You can get pickup radius on lots of stuff, but I think the easiest might be trying to get a Witching Hour with some, then maybe some on your Zunis boots or Vile Ward.
4. Try to trade out your gloves for a pair with a mod more useful than ASI. Getting some int/vit/armor/all res/crit chance/crit damage is possible, there are plenty on the AH.
5. My last point is something people in this thread told me like 4 times until I actually listened. Inna's pants aren't well-rounded and they greatly decrease your ehp. A lot of people like it for the movement speed, but we already know about movement speed from what I discussed earlier. Keep them if you're one of those 24% movement sticklers and won't change your mind about it, but if you do - go with like 150+ int/200+ vit/2 soc/armor rare pants. Just get whatever is the highest you can afford. This point and point #4 will help you with your all res/life. Shoot for like 50k+ hp and a bit more all res.
Right now, I'm guessng you have the spiders with the Widowmakers rune up because you have severe mana problems, partly due to using a 1h/mojo combo, but mostly due to you getting ASI on more than just a Witching Hour and going with a weapon that is 1.40 aps. You have ASI on your gloves.. your belt.. your pants... your bracers. Following my advice will reduce you to only having ASI on your belt, which I think most WDs are doing.
People might quote me and say go with Movement speed, but I do mp10 and escape arcane sentries, frozens, all that stuff because my Spirit Walk is up majority of the time and I only have one slot with pickup radius. Some people prefer Innas and Lacunis too. It's all whatever you wanna do. I'd personally wear Blackthornes over Innas if I had to, and Im not the biggest fans of Blackthornes either.
Honestly, as of right now your WD doesn't look bad. If you just want to get a Skorn and ignore my other points, feel free to do that too.
Have fun!