IMHO, either 2x ambush or don't use it at all, especially since you are an open archer. Since you are not maxed in strength you might want to consider a composite bow for better RT. Combat maneuvers aren't necessary at all (but they are changing a few with the new ranged crap coming out), I hunted all the way up to the bowels without them, then picked up sweep just to knock the pesky critters down. The same with lores, I am way past cap and still don't use them; I just don't cast that much. I would double in dodge, if you can, it is a direct influence on your DS.
Only the dead have seen the end of war