Quasi-Necro bumping...
Deep Breathing, if you use your Wyrm Armet post WSs, on a fully XP'ed Wyvern, will deal 512 damage. Great ability, but on it's own, not that much of an increase in damage.
As Tiger said, Angon 5/5 is a waste. Nothing lives that long... if it is going to live that long, there are other DRGs to rotate with.
Strafe is underappreciated. Paired with Dragoon's Earring, I typically get 256 breaths about 8/10 breaths. Its a very substantial increase to total damage output from weapon skills.
Empathy is a pain in the *** to deal with, and not worth the time. Tracking buffs on your pet without a proper interface for it, and no assurance that you're coping the buffs that you want make this JA a waste. Furthermore, if you're wearing Homam feet, you're gonna have to macro them out for a swing to reduce wyvern's HP to not lose 25% of your HP when you spirit link (thus further burdening your healer)
I went 2/5 Angon, 4/5 Deep breathing and 4/5 Strafe. Never been happier... My wyvern, Muffin, outdamaged our relic THF on J.Lo... Of course, that may just be due to the reduction of level differences for wyvern/avatar/automaton damage equations.