Autum headband +9 is the best headgear for Arrow storm at this moment
Incubus egg helps with SP
Cheaper option for SP is pirate's folly <-really cheap compared to ridewood hat
Elven bow is better than hutner bow, but elven is lv 100, also White wing set.
big cross bow is 110, the beast weapon, but need to at least +7 with 2 AS cards to be better than Elven arrows+bow
Sound amplifier is pretty good for casting time (accesory)
INT/DEX/VIT for AS build is for survavility + sp pool + casting time, the problem is killing single mobs, you either cast AS on them, or spam double strafe
Hybrid AGI/DEX/INT/LUK is good at higher levels, you might consider focusin in either AGI for a better ASPD or INT for sp pool, LUK with decent AGI works good with Warg and LUK improves the damage of your skills because it adds ATK.
DEX/AGI/LUK/VIT is mostly for ASPD/Warg damage, that build still can cast AS but will run out of sp faster than the other two builds. VIT is added at least once the ranger has a good ASPD/Flee. Mostly for HP pool and Stun defense. If ASPD is 193, you can target-lock most of mobs just by attacking