Mage/Dark Wizard Looking for Lv 105 mage build.

Im looking for a lv 105 mage build with mythics that can carry me through the endgame. Im currently an arcanist, but any mage archetype is fine as long as the build is good. I have a budget of 11stx but I'm willing to spend more if necessary.
Here is my current build:
> Cumulonimbus
> Soulflare
> Elder Oak Roots
> Silt of the Seafloor
> Photon
> Photon
> Lachechism
> Contrast
> Cascade (t6t6t6)

Any build suggestions would be cool. Thanks.

 

I just made a goofy build, idk if it's optimized, but it should outdamage a cascade.
https://wynnbuilder.github.io/build...000100nZ60z0z0+0+0+0+0-1T2Y2Y2Z2Z2a2a--PQ6VpM

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It's especially good when someone has 30 winded. (You get crazy dps.)