What gear to use and what build depends on what your goals are.
Are you going endgame? That's what I'd recommend for farming.
Only reason I could see for not going end game if you only pve would be if you were going to farm a particular set like, say 56 glyph gear. Some items can only be farmed by the corresponding level.
For instance once you get to lv58 you can't get lv56 drops but a 57 could.
As for your stats if you are used to pure dex, I'd stick with that, it maximizes what the bird can do best. Personally a have warbirds because I join pugs a lot and random ppl sometimes suck out loud. A str/dex bird does less damage but has better survivability.

And for no reason here's this