There are many spots for improvment but currently using
Serpent Sergent Bow (with sanction as much as possible
Rainmaker's tunic double melded with piety IV + III (+30)
Felt Kecks double melded Pie/mnd IVx2 (+14)
AF Feet
Felt Bracers double melded attack IV + III (+46)
Paragon's Crown with sanction down, grid officers cap with it up (I'm not actually sure how these balance out)
Electrum gorget +1
Tourmaline braclets
Spinal ring +1
Tourmaline ring +1
Explorer's earring
I don't do much endgame so if you do you will probably need more dex/acc then I do.
For the weapon garuda would be an improvment, if your ul'dah your gunna want your lt bow, not sure how other bows rank.
Pants would idealy be dex/str and I'd switch my dex ring to a Pie ring which is on my todo list
Hands I've seen some people say attack and other dex so dex gloves are on my todo list as well for higher end stuff since they add some acc.
Feet would be upgraded by darklight boots
Not sure on other head options
You can macro your gear like this, but if you are constantly needed the af boost you will probably do better to full time it
/battlemode off
/equip
/action
/wait 6
/equip
/battlemode on
I think Austar plays brd as well so she can give you better advice then I can if she hasn't already. I've only been parsed once so don't know how I compare
Edit: as mentioned harness is better then rainmakes, I got mine back when brd's stat caps were really low from ifrit/moogle bow.