[Hardcore Single Player] First time Pandemonium Event

Hello Community,

I am scared. Very scared. I play Hardcore exclusively and have never fought or even seen any of the Uber Bosses in the game.
I want to try, but I want to be prepared, so please bear with me and provide me with some tips if you can.

The character I am planning to take Ubers on with is a Sword

Whirlwind Barbarian, currently level 91.
UPDATE: Decided to take the plunge
- Uber Duriel was quite easy, it was more annoying to deal with the adds.
- As expected,

Lilith was super scary, my Merc never dies anywhere, he has like 18k Armor and on the off chance he does get hit, he just leeches back up, not so with this girl. That caught me off guard, but I was quick enough getting him back so she couldn't regenerate. The

Decrepify from Lawbringer saved my life here, I am certain. But we made it, I put out more damage on these guys that I expected.
- Uber Izual was quite easy as well.

I don't think I can go to

Uber Tristram yet, I seem to be missing about 100 Lightning Resistance and Lightning Absorb
My Gear is as follows:

Arreat's Face, socketed but socket is still empty.
Duress - in a

Dusk Shroud, 1237 Defense (I gather CB and Open Wounds are important here)

Death's Hand - Upgraded to

Demonhide Gloves (I figure these are nice vs.

Lilith?)

Death's Guard - Upgraded to

Demonhide Sash (Currently my only Source of Cannot be Frozen)

Gore Rider (More CB, Open Wounds)

Angelic Wings and

Angelic Halo, for the Attack Rating Bonus.
A rare Ring with 75 AR, 6% Mana Leech, 28% Light Res, some Fire Res and Poison dmg

Oath - in an

Eth

Balrog Blade - big damage, high speed, some extra vs. Demons
Kingslayer in a

Champion Sword - nice CB, Open Wounds, -Target Defense

Sensible alternatives I have include:
- Treachery Armour
- A very decent Bulwark with + to

Battle Orders and

Battle Command
- Hustle in a Mythic Sword for my Merc, though the level 1 Fana Aura is meh
-

String of Ears and

Laying of Hands instead of Death's items though I would lose "Cannot be frozen" and a ton of resists.
- There's also some Crafted

Blood Gloves: 20 IAS (enough to hit 4 FPA), 4 LL, 8 CB, 12 Life, 8 MF
- I also have a

Stormshield, is it worth losing the dps?

Including my Charms, here are some relevant stats:
- About 3100 Life when buffed
- All Resistances are overcapped slightly, Poison by 25+
- 4 Frame Attacks using

Whirlwind
- 87% FHR, just hitting the breakpoint
- Poison Length reduced by 75% for

Lilith
- 93% Chance to cause Open Wounds
- 63% Crushing Blow
- 15% Deadly Strike
- Roughly 11k Attack Rating with

Whirlwind
- Roughly 8k Attack Rating with

Double Swing

I deal about 650-3000 dmg with my Mainhand and 650-1400 with my Offhand.

My Mercenary is a

Frenzy Barb with

Duriel's Shell, Lawbringer,

Lightsabre and

Crown of Thieves for some life leech, which I could replace with a GFace.

Is this a good enough setup to try?
Are there specific things I should be looking for?

I am not that worried about Uber Izual or Uber Duriel actually, but

Lilith I am terrified of.
Chugging 10 minutes worth of Antidotes should get me to 85% Poison Res, being 65% over

Cap if that's even important.
The poison itself seems to be the lesser problem though, as I read she hits super hard physically, too.. can she one-tap me?

I also gather that before going to Uber Trist, if I make it past the Lesser Ubers, I should not face

Uber Mephisto without Lightning Absorb and a metric ton of Lightning Res, lest I get one-shot by lightning?
Also which of the Bosses do I need

Life Tap for, I read conflicting information about drain effectiveness.

Lastly, I have been thinking about leveling a Smiter Paladin to attempt Ubers with instead, as I read it's the "easiest".
What are your thoughts on that?

Any feedback is well appreciated