I have problem mainly about stat's allocation and the choice of weapon.
How many INT should I aim for?
Is greatsword a good choice?
Is this one still hold true?
Disciplined Strikes will be suppressed by Berserker Frenzy thus you should pick Tactical Barrage instead. With Barbaric Blow you will have 1-(1-0.3)*(1-0.3)=51% hit to crit chance.
Here's the link @Not So Clever Hound mentioned earlier