Tree of Savior Forum

Need some advice for the future mergen build

Hello everyone!!
Im planning to build a mergen for questing, farming and dungeons. I’ll go high str with around 20-30 con. For the skills mainly focus on single target dot dmg and hopefully mergen will help with the lack of aoe dmg.
I really need some advice for htis build, is this build doable? and under the same concept will a3 wugui2 fl2 doing better?
a3-wugu3-fl1-m1

Thanks in advance.