The heck is with Legiana and Shrieking Legiana's bonus making it seem like they're for bows but the armor skills they have are not at all good for it, beh. I haven't found a particularly good armor set-up for bows, the one that making me say THIS IS IT! so far, blah.
Mighty Bow (Bow Charge Plus) has always been better as a decoration, nobody ever used the Legiana set bonus.
This is the set I'm aiming for:
Namielle Helm B (Constitution 2, Maximum Might 1, [Forceshot])
Velkhana Chest B (Quick Sheath 2, [Forceshot], [elemental])
Velkhana Arms B (Quick Sheath 1, [Spread])
Namielle Waist B (Constitution 1, Stamina Surge 1, [Spread], [elemental], [elemental])
Namielle Legs B (Stamina Surge 2, [Mighty Bow], [Tenderizer])
Exploiter Charm II (Weakness Exploit 2)
Gives:
Constitution 3
Quick Sheath 3
Stamina Surge 3
Weakness Exploit 3
[elemental] 3
Normal Shots 2
Spread/Power Shots 2
Bow Charge Plus 1
Critical Element
Elemental Acceleration
Not sure if this is the most efficient, but it seems to be the best I've figured out.