After I corrected my math, it should be 100-326, correct?
Which makes it a 266.25pDPS bow, now you don't need to buy Infractem anymore and don't suffer the "cannot leech" down side.
Still, in a few more more levels you can consider other bows like Reach of the Council (2 additional arrows, filtered pDPS >260) or Lioneye's Glare (good roll have >325pDPS).
Those will pretty much be your cheap end game bow. As anything beyond 350pDPS are really expensive.
Which also means, you need to start looking dps from other items/methods. 5 or 6 links for main attack, abyss jewels, dps mods on other items, more aura, etc.

Aside from ensuring your gem setup is proper, which means not even 1 socket is wasted for useless thing, might also want to get a Golem companion.
It's not mandatory.

Leech is a huge survivality aspect of this game. Make sure to get the life leech passive nodes south of your starting point if you decide to get rid of Carnage Heart amulet someday.

80K and you still not satisfy? 
Link your account URL, will see if anything can improve.

Hm? Saw in global chat.. all have few hundred k DPS... lol
How to link to here ah?

80K and you still not satisfy? 
Link your account URL, will see if anything can improve.

There's always the balance between DPS & survivality, and skill built in a different way - there is no one fixed way to make a same skill build.
Here's how you link. Or account name + character name will also be suffice, can import the character build into Path-of-Building tool for inspection.

80k dps - this game still playable? boss few hits death instantly?

is this game hero xp cap at level 100? if not we can pick all passive tree

u see...my HP is only 2.8k - i think this is darn low, while DPS is max at 80k+
everywhere i see ppl having 6-7k HP with few hundred k DPS   

Not even close. 
Don't even think about getting there. It's a huge grind. 
If you can get to 90, then it's good enough. Most pro don't even bother with 100 and settle with 90-ish and move on to try new builds.
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I think you cared too much about chaos resist, to a point it ruins every other aspect of your char.
You don't need to care much about Chaos Resist unless you've into farming Breach Chaos Boss.
Most people would just leave it as -60%, since chaos damage are easily avoidable, such as poison cloud and chaos projectiles.
So, go find a pair of better rings. What you want to look for are LIFE, resist, and elemental damage with attack skill.

- your life % on tree is OK, except you almost don't have any FLAT LIFE VALUE on gears for it to scale. 200% of 1 is still just 2, you get what I mean?
- Your chest armor is a complete bad news. Zealot Oath convert life regen into ES regen. That is one mod you don't want for LIFE build.
- need a boot with 30% move speed, more elemental resist and LIFE
- Abyss belt is pretty much a meta these days, it have everything you need, plus a jewel socket for Abyss DPS jewel
- not using Abyss Jewels, this is one method that is so easy to push dps these days, get half a dozen of jewel slots on passive for them.

I'll update this post after I swap things around in Path of Building.[/size]

1- uber izaro is small fly    his attacks all can be avoided. I'm not aware he deal chaos damage, majority physical. He can 1 shot people with 5k life if not having enough defense layers.
2- but at the sacrifice of resist and life, rare rings can roll physical & elemental damage anyway
3- if you can keep your flask up all the time, sure. But most people don't want that micro management and cap it 75% with gear, easy. Also to free up flask slot for more important things.
4- yep, flat life value. Armor pieces can goes up to 120+ flat life, ring is around 70 I think, belt depends. Belly is decent.
5- there is. People died from Hardcore Abyss have their item goes to Standard anyway, just that they are much more expensive.

I'm not experienced in melee skills, but here's what I came out with:

Your existing stats shown in Path of Building, numbers might vary a bit in-game:
- total DPS (with sulphur flask up): 73,200
- total LIFE: 2,844

Adjusted passive tree, items, flasks, skill gems:
- total DPS (with atziri & lion roar flask up) 5-links: 133,870 / 6-links: 182,907 <- skill gems aren't max level & quality
- total LIFE (with belly): 4553
^ removed all jewels, there are 3 free jewels sockets
^ added Hatred aura replacing Determination
^ added some crap rare items, obviously there are a lot of rooms to improve on items
Link: https://pastebin.com/xb46sGzL
Suggest you download Path of Building, import the link above and experiment with it. Compare with your char and see what I changed.

- obviously there are axe out there that are much better if you want to change axe 
- changing into a Kitava's Feast unique axe give 20k more dps for example

Wow cool.. thanks dude
I'll try it after dinner