Seiryu's Kote + Barrage Question

I'll start with barrage since i think i already know the answer just need confirmation, gear that enhances barrage must be worn for the subsequent ranged attack correct?

(i currently lack af+1 hands and need to redo my ASA pants so i use seiryu's kote atm)

And my question on seiryu's kote is what would be the best augments to get on them (i use them for last stand or are there better last stand hand peices?)

I was thinking STP Ratkk and crit perhaps... since i use them for barrage currently.

id kill for a rattk or mab augment on seiryu kote ;-;

thing is once i get my hands done, i will only be using them for ws'n and last stand cant crit naturally right?

ah then i'd probably want to shoot for stp + some combo of str ratk/acc, also... your avatar disturbs me x.x