Check my build, Phantasm (Sword/pistol & Greatsword)
There are 2 problems I see with it so far, first off its a bad link if you just click on it (need to copy&paste to go there). Seconds, there is a staff and sword/pistol.
But really the build doesn’t look to bad, I would suggest that you put points into Domination as opposed to Chaos this is for the 15% increased Illusion damage. The damage reduction is not bad, but your build is based around phantasms dealing damage and taking damage so the damage reduction on yourself is not as useful as you expect.
80 Thief 80 Engineer 0 Necromancer
80 Elementalist 80 Mesmer
I actually changed my build since this post, taking into account what you said. Ill show it again, and yeah links seem to be broke, not sure how to fix that, copy and paste is all i know. but here you go.
bump, would love more critic review on this :P