Need advice with Ascended
Celestial is a choice you’ll regret; it’s viable more or less on eles and engis, not Guardians. For all your build needs: http://metabattle.com/wiki/MetaBattle_Wiki
If you’re focusing on WvW (because Trooper runes), better stats are available (such as Soldier’s).
If you’re focusing on PvE, get full Berserker’s and damage runes. While you’re learning, trait into the +300 vitality trait.
20 level 80s and counting.