extra skill points

Hello all. I have 20 extra skill points left for my agi/crit brawler. Out of the following skills only, which would provide the best return on dps:
Mail breaker (I have an antique dagger with the two passives before that maxed)
Martial Mastery (The only martial skill I don't have along with Martial Discipline)
Martial Discipline (would require me to get Martial Mastery)
Bash to level 10 (currently level 5)
Attack Up (currently level 5)
Intimidating Power (I have Critical Up maxed already)
I'm really not interested in any other skills since they are either maxed already or I don't want them. Thank you in advance for any opinions on this!

 

for me .. i tried a several build .. on pure Brawler...
dagger passive is sucks.. for me..
when i dont have the dagger passive my normal attack range to 2.5k - 3k
but when i have a dagger passive skill .. multiple damage range to 250-300 (x3)

on Metal stinger.. i far i remember that time when im lvl 115 .. BTW can i know your build?

but if i were you.. if ur a pure brawler .. Knuckle main weapon .. go for Martial Mastery

 

Martial Mastery +5sp
Martial Discipline +10sp
Intimidating Power +5sp
^_^

 

Thank you both so much! I appreciate the advice! I'm gonna notebook of oblivion the dagger passives (which saves me another 20 sp), and put those 40 skill points into maxing Martial Mastery, Martial Discipline, and Intimidating Power with 10 points left to spare. Again I appreciate the help you both have given me, cheers!