That build is fine too, use a +15 bow. I didnt take the time to min/max ur armor for 53 poise, dont know if it matters to u, or u picked it out for looks.
The best minmax with the best looks. i.e. no Waistclothes preferably. +15 bow is superior to +5 Chaos with fire arrows?
Single damage path is better than split. But i dont know exactly how low that single path AR can be before the split can overtake it without testing. With 16/40 i would go +15 with large arrows and poison. Any reason u have 16 str when the uchi only needs 14? Are u swappin out for chaos blade post buff?
I may tweak my armor (in order to still fastroll) and swap Uchi for Claymore and in order to 1h it I Ineed 16 strength. Also to answer your 53 poise question, yes I want at least 53. I agree I heard that +15 composite with Large arrows is good and out damages +5 chaos
Theres a good bit of combos to hit 53-56 poise, just play around with the armor selections.