2xDex/PA, 2xStr/PA, 2xStam/PA is a good starting point.
A couple of points
1) The more Patt you have, the more damage you are going to do (endgame bosses 400k-500k PDef.)
2) You are a mob one shot unless you can get to 170kish health with 100kish Pdef.
We have some glass cannons that have 60k health unbuffed with all Str/Dex/Patt mods. They die more, but they do more damage during the boss fight. I have more Stam, it is a comfort thing, but as have been restating, I have been loosing Stam and adding more damage mods. If the run goes the way it is suppose to, the tank is taking all of the damage from the mobs, the boss fights are mechanics. Runs are rarely that smooth, so it is really a matter of comfort as to how much Stam you want to stat.