Why Int 14? You can use other party members for most skills, so you could drop Int to 12 or 10. Then put more points into Con.

Unless u plan to use Combat Expertise or making your char higher in ranger than 5 You won't need more than 10 INT, 10 WIS. I would put more points in CHA /DEX/CON whatever You want. In other Case Combat Expertise need 13 INT so 14 is a waste, and lvl 5 Ranger allow You to cast lvl 1 spells so 11 WIS is enough. Although reconsider doing either 7RNG 13ROG (to get Improved dual weapon fighting for free) either for example full Knife Master.

Why 14 INT? Skill points my mans skill points! Con is easily got higher from +4 DEX + 4 CON belts for example while a higher INT through magical means wont give you more skills. + dont want my char to be stupid, he has rogue levels after all.

Why CE? Even that noisy gnome isn't really CE. CE is a psychopathic guy, it's impossible to roleplay a CE character. Like roll dice on your every decision and select craziest one.
Oh man, I'd like to play in a party with a real CE char!

Skill points You get from companions. First i thought that like in Pillar of Eternity my main have to have al skills. But nope, even diplomacy can be based on your companions. Also there is 11 (eleven) skills so taking into consideration that You have 5 other comapnion each of You need TWO skills to fill up whole palette.

Chaotic evil characters might be unpredictable, but they have enough sense to know that you shouldn't do something like set your bedroom on fire before going to sleep, or stab a city guard in public.

I am not sure about second one. I think stabbing anyone in the public no matter if he is guard or thief is very much in style of CE, also about setting bedroom on fire he will if he believes in some fire-god.

there are a few problems with this.
first of all there is no point in going barb below 8 as it is then when you can get DR rage powers. fighter will give you nothing pretty much.

from barb you might want reckless stance and all 3 totems for pounce(optional), bite, and DR rage powers after 8. rogue will give you enough combat tricks. I would go first into rogue3 to get finesse then 8 barb as you need that DR to survive in melee. technically all you have to have to be effective is rogue4/barb8 it leaves 8 more levels to go. I would say vivisectionist works well for at least 1 level dip. can get more for preserve organs and alchemical casting.

for 3 totems and pounce you need barb 10.

close with what you had in mind r11/barb8/v1 would work. r4/barb8/v8 works too trading improved evasion for longer mutagens and a lot more sturdiness and some casting that will make it a bit more interesting.
for pounce with benefits you can go r7/v3/b10 or r6/v4/b10. 1st one will get you and extra d6. 2nd one will get you 1 more discovery 10 more minutes of mutagen and 2nd level casting.

for stats 9/20/17/10/10/7 is ok. drop 1 into con and the rest into dex. if you plan to go into vivisectionist or want more int do 9/20/17/12/8/7 or 7/20/17/14/8/7

oh also dual-wield finesse is broken atm giving no dex bonuses to damage on main hand

Lots of info, thanks. Is there some decent way of doing a STR dual wield toon then since DEX to damage is broken? Or just be patient and wait for them to fix it? :)

freebooter10+anything or ranger19+ for free twf. basically freebooter if you want to multiclass rather heavily and any other sub if you want to go more or less pure and have a pet. now with twf thing solved you should move on to not being dead. invulnerable rager 8+ is always a solid pick but it will come too late. bit of vivisectionist is always welcome for anyone. will give you shield AC + mutagens and all that good stuff. so10/10 with freebooter/vivisectionist doesn't sound too bad. lvl4 casting will plug holes in your defences. pure ranger gets smilodon that is better tank than most of your companions and then get a level of something for fun. or go ranger20. nothing is wrong with that. for pure I would take monk probably just for easy access to crane style. for freebooter you will have to get dodge and improved unarmed to get there.