r3 patience is a must.
the whole purpose of my blink/recoil combo on a range build is because i have a suddenness ruby, and also i have r2 somersault (14 sec cd), and so i get a dmg decrease buff every few sec and also a gap widener with a stun.
with only r1 somersault, and no suddenness rubies, this tactic is useless, if not downright stupid.
passive energy rubies are crap. restor is all you need, with physical reserve and xbow i never run out of energy (bow is better but rare xbow > my green bow </3)
if youre getting 50% less stun/kd/movement impairing effects and end/fin rubies, you might as well complete the set and get r1 parry. makes all the difference. (1st ALLOWS you to parry, the rest increase chance)
r3 fletch is mandatory imo. not only does it allow you to fletch on the move (no cast time), you can fletch another arrow every time you shoot solid/double shot, that split second youre waiting for cooldowns. r2 would screw that all up.
the build isnt bad, but just a few things i saw