Wyn Damage

Hi fellas

I lade a set like
Ceduro◇wyn
Ira3◇wyn
Arelta◇wyn
Specia B stone ◇wol/◇ganei

Stats @400 str agi crt and 100 vit
Purple lines
Gatekeeper, berhard, teo, shelk, merario

So far my damagw output each wyn is 15k if i deal a shellbrake it raises to 25k each.
How can i increase that damage output from wyn?
Should i go for others Ais?

Thanks for help and advices