Warrior/Knight Help Thrunda Build

So i got a thrunda recently and i need some help with making a build for it.
Heres the stuff im using right now:
-Morph-Stardust- for SP, mana regen and some defense
-Boreal Pattened Aegis- has everything a thunder/air/water build needs as such as thunder dmg, mana regen, alot of hp, etc
- Vaward- for SP and spell dmg
- Ventus Tail- for tons of thunder dmg, some def and SP


For Accessories, im using:
Concentration
morph topaz
prowess
bottled thunderstorm


Originally i was going to try using breakdown or cumulu but surprisingly i seem to do more dmg with star dust, weird huh.
I took some ideias from @summitwei , so props to him ^-^
Though i dont think my build is perfect, so i need some help would be appreciated
Have a nice day!