It would strictly be for PVP
I don't play D2:r, but the info may come in handy. Also don't know if you want it for PvM or PvP?
There wasn't any FRW bps for LoD, but from memory the Glass canon build would use FRW sc's and use Faith, I never built a PvP bowazon.
You will need Archon Plate armor, high defense and classed as light armor, so does not encumber your run speed. Fortitude was ideal back in the day, maybe you have better armor runewords with 300% or so enhanced damage.
War travs because of the added damage, the run speed is lower.
There is a Vigor runeword bow you could have on switch or have it on a Rogue... forgot the name of it.
You are pretty much going to be full dex build, so having 2x Ravenfrost is cheap... or 1 Ravens for CBF and crafted ring.
Belt Razortail for the pierce.
Crafted/Rare gloves 2 bow / 20 ias other mods, or just go with Laying of Hands 20 ias, 350% dmg to demons and nice fire res
Cats Eye amulet I believe has 20 ias and FRW ... or Highlords / crafted(rare) 2 bow 20 ias other mods (think you can get these)
Faith or Windforce
Inventory, I will leave that to others, I have a different bow build.
I missed out helm on purpose.
Good luck, I am sure someone will set you straight.