[1MHC] Unique chest armor for TS ranger

I had a really tough time deciding on what build to play in the upcoming 1MHC league. I knew that any build I pick isn't going to be as tanky as my elemental incinerator from last league. I eventually decided on playing a phys crit tornado shot ranger. I finished in 18th place last 1 month, and my goal is to hit top 20 again this time. My plan for defenses is...

~180% increased life
~200% increased evasion
Acrobatics + phase
Ondars
Atziris step
Grace
Cwdt immortal call
Cwdt enfeeble

So, My question is, which unique chest to use? My main choices are obviously Lightning Coil and Belly of the Beast. I'm leaning towards coil, because in my experience mitigation is better than raw hp once you have enough health. However, the extra health also helps with elemental damage, while coil only helps vs phys. AND coil can possibly cause me to get shocked...

My third option is less used, Daresso's Defiance. I wouldn't be using it for the onslaught, but for immortal call. From what i've read, if immortal call procs when hit, the endurance charges will be used by IC before they are used by daresso's. Therefore, almost every time my IC goes off, I would get a full 4 charge immortal call (endurance charge from bandit quest). I doubt I'd use this one, but it is a possible option.



I'd love to hear some advice from anyone who has played tornado shot deep into a hardcore league (like level 90+). I've always played spellcasters in the past, so really any advice at all for tornado shot would be good. I plan to hit level 100 this time, as I will have much more time to play than last league.