according to me you'll lose around 14% dmg on your PD. since warbow req is 6 and i've tested and only the 4points above Bow req gives the bonus.
I doubt it will be a signifficant amount of dmg (around 4.9dmg).
There's so much info unknown for this game it hard to advice a build, you should go for it and decide what you should improve the next time you retire.
I find it hard to decide if 139wpp is that much better than 130wpp since no info about the actual numbers
Ofcourse the added agility has the advantage of speeding your attacks up.
Myself i'm going for the 3 extra strength to maximize the bonus since i don't know what the +9 wpp would improve and doubt it will be more than (4.9dmg) and i got used to the 130wpp my last build
But well as most people would say or won't say. go for it and tell us your findings you can always retire if you don't like it anyway ;)
