Hi everyone!

I'm having a bit of an issue against the act1 boss, well the 3rd and hopefully last stage.
My build is rather glass cannon but it was a smooth sailing until this fight.

I can't find a timing to safely go near him and start dps without being killed in a matter of seconds.
Looking at my passives tree I was thinking of respec, I could grab "Feast for the crown" by going in a straight line instead of the right path, And "Covert Operative" instead of "Backline Raider" for a bit more dodge.

Link to screenshot of the character
[Stats and gear](https://imgur.com/84zFefy)
[Passive Tree 1](https://imgur.com/GCtIdz4)
[Passive Tree 2](https://imgur.com/ImHJRUv)
[Passive Tree 3](https://imgur.com/dQ0weUz)
[Passive Tree 4](https://imgur.com/c64FDC5)

Do you think it could be enough, am I way too low on HP having never put a point in toughness?
Any advice would be greatly appreciated :)
Thanks!