My AS ranger used this set up to one shot big bell during the nct spotlight. Though not sure at what level.
+9 Miraculous Autumn Headband
Miraculous Blush
Well Chewed Pencil
+11 Bxb with two peco peco egg card
+12 white wing suit EA1 EA2
+9 White wing Manteau - all FS not sure how much
+4 White Wing boot with sp enchant
White Wing Brooch with sp enchant
Perverse Demon Mask
+9 Shadow Physical Set (this set i borrowed lol i m not poor but also not rich)
I dont have middle headgear (like tengu/mob and now seraphim) at that moment so at early level i used ODA buff and takoyaki to really oneshot but able to ditch the ODA and just use takoyaki when hit 165-170. Went with 108 LUK for hard def bypass so it give lots of damage increases against bigbell. other stat is 120 dex, 100/120 int (forgot which one) and at first i used to put lots in vit but actually found out later that ranger benefit from FLEE bonus a lot so i think its better to focus more on AGI than VIT for fleeing some mob while mobbing.
For the Original poster. please do get the arrow storm for mobbing/leveling. the white wing set is good for early leveling in mid ti/nogg party. make sure the suit is +9 or higher and +9 elven bow/+9 gigantic bow. just ask some random ranger around for selling you one should get for cheap. (couldnt even get to sell mine because no one is buying lol).
Once you get high enough maybe 120-130 you can starts to get high tier equip for ranger like autumn headband, high refine bow, middle headgear to level at places like dolomedes/scaraba hall/high ti
Really enjoy playing as an AS ranger for my first dps char and see the growth of it how the damage increases from mere 15k (lol) to be able to one shot big bell xD and I hope you enjoy it too.