Guild Wars 2

http://gw2skills.net/editor/?fIMQJARUjcONvJPuQMRCA8BrMKKCoLDqYSVoNA;TEAjMA

So, yesterday, a friend of mine sent me this build and asked if it was viable.
I honestly answered that it looks nice, but I knowing him, what he wants when he says “viable” is “I want to match up it the best.”

I myself stick solely to range builds (with the except when someone needs a DPS/support GS warrior) so I can only give him information and facts, not much experience.

What do you guys think about his build?
When I look at it on paper, it seems pretty good.
He wants to know if it is “Viable” for end-game Fractals and he needs help choosing runes. He is going Berserker Accessories w/ Ruby, but he doesn’t know what to put on his weapons (GS + Rifle) and all his armor. He has a full set of Knight and Berserker, what would be better to use? (I personally told him to go full Berserk, but mix in Knight as needed).

Thanks everyone!