Mathematical help: GS 2H slasher

[Venar]

Dear maths gods.
My Paladin, a versatile build, is making a Greensteel Mineral II 2-H slasher.
The goal is simple. When the time comes to drop strategy and just beat up things with raw dmg (portals, Harry, Sulo, etc), i want a +5 Transmuting Keen Acid-Good Burst- Good Blast weapon.

I have:
Power attack
Exalted Smite 3 (critic rang +1, multip +2), 8 times
Divine Sacrifice 2 (+7d6 light dmg, multip +1) unlimited times but costs 5hp
Divine might 3 ( +6 dmg for 1 minute) 10 times

Now, the plan is simple, spend all the Exalted smite (every 3 sec) and then spam sacrifice.

Now, it becomes quite complicated to calculate. The Greataxe will hit for x5 dmg 15% of the exhalted smite, of which i have just 8 (until they recharge), and then x4 dmg 10% of the sacrifices.
The Greatsword will hit for x4 dmg 25% of my smites (so 2 times) and for x3 dmg 20% of my sacrifices.
The Falchion, for lower base dmg, will smite x4 dmg 35% of the time (so maybe 3 shots) and then for X3 dmg 30% of the sacrifices.


Considering swing speed, blast/burst multiplification, Exhalted Smite amount limitation, i have a really hard time seeing the big picture.
Since i can only smite a certain amount of times, having a better critical chance sounds better (falchion) but then with sacrifice, maybe the axe becomes more valid.

HELP!

EIDT: i realise that the tier 3 can only be acid blast, my bad.

[WeaselKing]

Greataxe.

You won't get good blast though you will get acid blast (iirc). And I have found acid blast to be underwhelming, maybe go for +4 AC?

[Venar]

The +4 Ac will be on my Heavy Pick, my trash-DPS weapon.
I am a versatile build: Power Attack, Precision, and Improved crit PIERCE.

So, i can hit Precision + Smite/Banish/Wop rapier for specific critical needs
Or Precision + Vorpal/disruption/paralyse for general needs.
Or no stands/power attack + Greensteel Heavy Pick for Trash-DPS mobs (x6 multip, woo)

And, for power dmg, the 2H greensteel. That's why i want mineral: for the Keen aspect. So, when i wield it, AC is usually not my concern. Maybe all the bosses wont be immune to acid in the futur :P

You say Greataxe. So +1 to multiplier is worth the - 20% chance to crit?

[Deslen]

I went with the falchion on my pally. I took the +4 AC, too, since endgame acid blast isn't that wonderful. The crit smites 35% of the time for 350+ damage are quite nice.

[Venar]

How do you like it?
A guildmate of mine said i would find teh Falchion attack animation speed "frustrating".

[WeaselKing]

You say Greataxe. So +1 to multiplier is worth the - 20% chance to crit?

Balanced by a greater swing speed? In my opinion? Then, yes, definitely.