Assassin/Ninja Help First Time Trying To Create A Build (lvl 87 Blossom Haze)

So like the title says, this is the first time I've created a build on my own.
I know most people say you should only do builds lvl 100+ yadda yadda yadda, but I wanted to try and build one for lvl 87, because this is the earliest one can use Blossom Haze.

What do you think of it, I'm sure it's definitely not optimal, the biggest issue is obviously the mana regen, but I'm not sure how to fix it efficiently.
My goals with this build were:
- not too much -ms
- low smoke bomb cost
- decent tankyness (and damage? tbh I'm not too sure about what the average damage numbers are at this stage)
- mana regen ( obv didn't really work out)

I wanted a build that is not too squishy, so that one can run in and proc triple cherry bombs as much as possible without being at the risk of being burst down.

https://wynnbuilder.github.io/#4_0kZ0ub0uX0FP0nu0uP0Xe0UB0uQ1h040q040e1N0000100036

Any constructive criticism is appreciated!

 

Assassin is best in spellsteal tho...