[1.1.0] Twin Viper Smoke Duelist (Evasion, Dodge, & Block + Viper Strike)

Setup: Spell Totem + Summon Skeletons + Blind (+Multistrike/Melee Splash)

Pros:
-Skeletons distract enemies
-Skeletons really distract enemies

Cons:
-Skeletons don't blind very well (multistrike would probably help)
-Skeletons distract enemies, making it harder to poison large groups at once
-High mana cost at higher levels

Setup: Flame Totem + Blind + LMP/GMP + Faster Casting

Pros:
-Very effective for blinding enemies
-Does decent damage

Cons:
-Easily killed by large mobs
-High mana cost at higher levels

80 Point Passive Tree

First of all, it is very difficult to get to 120 points for a build. Generally, you want to aim for around 80 points. If your build doesn't work by the time you have that many points, then you're in for a huge timesink to get it working because of the experience curve for those last 20 levels.

You didn't pick up nearly enough Int. Although you will use mostly Dex/Str gems/items, you'll still probably end up using some Int based ones too. Having close to 110 points in each category is a good target since support gems usually have a 110 point requirement at level 20.

You claimed to go "high life" but you didn't pick up very many life nodes. I added in a lot more in my version and you might end up wanting even more. The rule of thumb that I've heard is to aim for about 200% increased life if you want to make it in higher difficulties. (My tree has ~147%.) My first build was quite similar to yours and ended up getting stuck since I was dying too often.

Until you are late game it is generally better not to focus on a specific weapon type. This lets you use whatever upgrades you find along the way. Once you get into higher levels, specializing into specific weapon type nodes provide bigger bonuses than the one-handed or physical damage nodes. Unfortunately there aren't very many unique 1 handed swords so you may find that something else is more effective. (Don't let uniques fool you though, you can still get very effective rare swords.)

Mind over Matter is a good defensive keystone if you have a large mana pool. I added in a few more Mana nodes in my build suggestion. Using skills with many linked support gems can cost quite a bit of mana and since you'll be losing even more to help reducing incoming damage you might want to consider getting more mana nodes and/or reduced mana cost nodes.

I've never used Vaal Pact so I can't really comment on it's effectiveness. One thing to note is you can't recover life with flasks so once you take it the only bonus that Herbalism provides is increased charge recovery. I'm not sure if that is worth the skill point or not so I didn't include it in my build. It also stops life regen which can be painful. Until you decide to take Vaal Pact you'll probably want the Golem's Blood node which provides 1.5% life regen.

The problem with life/mana leech is that you have to do high damage in order to make it worthwhile since most things only provide a 1% or 2% return. It can be hard to use until you're at a high level/have gear with 5 or 6 links that allow you to buff your damage to high levels. Stacking leech through gear like rings and amulets is also very helpful and claws have inherent leech bonuses.

You didn't take Iron Reflexes so you will still have some interesting options from your evasion rating. If you choose not to use solely armour-based gear then having the Ondar's Guile keystone is a great addition to your build. This doubles your evasion rating against projectiles, which can help a lot when tanking. I'd probably aim for mostly armour gear and try to keep my evasion rating around 25% which will then be bumped up to 50% against projectiles with OG.

Here's a 100 point build, that I might aim for as the "final" build. Because this build has basically no passive investment in resistance boosts, I'd probably consider using an Aurumvorax for the up to 60% boost to all resistances and a high physical damage/high dps sword in the other hand. If you get 14 points in the current race season you can pick one of these up without too much time investment.