Your build seems too focused on survivability to do lots of dps. For one, you're using all ranged weapons but using heavy armor. If you're looking for dps, switch to medium armor and focus on raising you crit rate. You can get around 40-50% crit rate with medium armor passives, bow passives, weapon traits, etc.

Also, one of the awesome things about a bowplar is that we have some strong spells that not only do great damage, but add lots of utility and gel really well with bow. Javelin throw and sun fire are two spell you might want to try working into your setup. If you utilize both spells & stamina attacks, you're going to end up with a lot higher dps and burst.

I haven't played around with backlash, but in theory it sounds awesome for burst potential. Also, the Ardric Spear skill line and a 2hander is pretty strong, especially for aoe damage. The build i want to try next is: 2hander > puncturing strikes, solar flare (the aoe morph), cleave, momentum, critical charge, and radial sweep ult. It's more of an aoe damage build but I feel like it should be really strong.