Dunno if this would help.. i play gw2 on my laptop that has hd 4000 intel graphics, has 4 gigs of ram and a dual core celeron. Everything runs fine on low settings (28 fps on average).
This build is pretty much open for alterations, so whatever works for you is ok. I like to have two condi removers, saved me so many times. I like last chance to maul the boss even faster and i don`t mind if it kicks in at 90 sec. Signet of fury could be switched for fgj, true that. It all depends on play style, even this is the case - i am too focused on fighting that i don`t want to split my focus to see if the skill has recharged, sig of rage is enough for me to look at, don`t need fgj too, but fgj instead of sig of fury is better option party wise.