Do these EDs work with quarterstaff & Sireth (which is another animal altogether)
From Grandmaster of Flowers
A Dance of Flowers: Passive Bonus: +[0.5/1.0/1.5][W] to attacks you make while Centered. bug: Does not apply to bows used with Zen Archery
Dancing with Flames: Passive Bonus: Gain fire resistance [4/8/12]. Gain +[1/2/3] to attack and damage rolls. If you have Monk levels and are in Fire stance, add [0.25/0.50/0.75][W] to your weapons.
From Legendary Dreadnought
Improved Power Attack: Active Ability: (Cooldown 6 seconds) When Stance: Power Attack is active, you deal +0.5[W] damage with weapons.
With all of above EDs, added weapon damage stands at 1.5w + 0.75w + .05w = +2.75w in firestance with PA on.
If Sireth works with all of above, it would mean 2.5w + 2.75w = 5.25 (1d10) +7 base damage!