Firestorm Ignite Hiero - League Starter - Does it look good enough?

First time making my own build and to be honest I have no clue if what I put together is a) playable and b) not complete dogpoop.

Here is the PoB: https://pobb.in/9l8vmnkWHRok

Its very barebones. No Flasks, no uniques or special items, nothing ticked in config and the gems aren't filled out yet. It already has around 500k dps without using a second curse (allocated points in WoD just for reference) and without the vaal version. To me this seems pretty great but I have no clue if its actually playable.

I am not set on hiero, just used it because I wanted to see what impact arcane surge might have. If you have better ideas for the ascendancy let me know.

I would greatly appreciate any input you can give!