I'll have to disagree with you guys.
Ulysees Duster. +5 Critical, then get the +5 Critical from the "light touch" perk.
Boones Beret you get another +5 Critical Chance.
Lucky Shades +1% to your critical chance,
Also if you use VATS for every Assassination, there is another 5%
This is what I usually wear for my crit characters, I usually wear the elite riot helm and 1st recon beret instead of the lucky shades.
I'm thinking this character will be more about 'fitting in' with society, I might have to look at some of the weaker DT armors.
The Chinese stealth suit, something about that suit looks just awesome.
But you look ridiculous, not much of an assassin if everyone notices you straight away. Imagine sitting in a bar wearing that, everyone would instantly notice you.