Best build for chaos chrono? And best budget build.

[rekt me daddy.9842]

I'm using this build http://gw2skills.net/editor/?vhAQNAs+MWGOqzOIDCNzAYBao6NNUPVA-jhCXABNrEExTCAvPAgeUPJgFDAW5Ho6AgVFDA2TIEtCkCIwBbA-e

I think it gets enough to have 100% boon dura, because 43% boon based with 33% concentration and 9x3% average from chaos persistance. While i use 4 scholar to get high power and 4 zerker armor for dps. On test it gets 6-7k dps which is nice for chaos. With this build its cheap, you can main weaver wnd chrono without much gears difference. No need to ruin the weaver gears with other runes than scholar. What do you think about this? Is it valid?