Can you combine Symbiotic Entity with Unarmed Strikes?

I accidentally stumbled upon what seems like an incredibly resource heavy but incredibly powerful monk build. The mechanics seem to work together but I want to get clarification on if I’m correct or not in my understanding.

Symbiotic Entity contains the following section.

“As an action, you can expend a use of your Wild Shape feature to awaken those spores, rather than transforming into a beast form, and you gain 4 temporary hit points for each level you have in this class. While this feature is active, you gain the following benefits: • When you deal your Halo of Spores damage, roll the damage die a second time and add it to the total. • Your melee weapon attacks deal an extra 1d6 poison damage to any target they hit.”

The build follows as such: • 5 Levels of Circle of Spores Druid • 13 Levels of Way of the Four Elements Monk • 2 Levels of Hexblade Warlock

(Please assume for the sake of argument that all required stats are at least a 13 and Dexterity is a 20)

Turn 1: I use my action to invoke my Symbiotic Entity and my bonus action to cast Hexblade’s curse on my target Turn 2: I use my bonus action to cast Hex on my target and then use my action to perform 2 Unarmed strikes on my target. Turn 3: I take the attack action and spend 1 Ki to activate Fangs of the Fire Snake, I proceed to attack a total of 4 times expending 1 Ki per attack and 1 Ki for Flurry it Blows (Totaling 6 Ki Spent)

So albeit a lengthy and semi-convoluted process, by turn 3 I am doing 1d6 Poison+1d8 Bludgeoning+1d10 Fire+1d6 Necrotic+11 (Dex+Prof {Due to Hexblade’s Curse}) meaning my average Damage per hit is 28. I also do 4 Damage types of damage in one hit.

So is this correct? I understand the requirements are moderate but this seems like a fairly easy way to boost the monk’s attacking power up quite a bit.