Can you take the Attack action and use darts as improvised "light melee weapons" to trigger Two-Weapon Fighting for the purpose of making two thrown attacks?
My financially challenged first level wizard chooses the attack action. He declares the darts to be improvised daggers so they are "treated as such".
This declaration requires a ruling that a dart "is akin" to a dagger. This declaration; using the "as if it were that weapon" clause; changes them to "simple melee weapons" with 1d4 piercing damage, adds the "finesse", "light" and "thrown" properties, and gives a range of 20/60.
Improvised Weapons PHB p.147. "In many cases, an improvised weapon is similar to an actual weapon and can be treated as such. For example, a table leg is akin to a club. At the DM’s option, a character proficient with a weapon can use a similar object as if it were that weapon and use his or her proficiency bonus."
He holds them in each hand, this triggers a bonus action per Two-Weapon fighting. The thrown property permits me to thrown them in place of a melee attack. Negating the need for a melee attack.
Two-Weapon Fighting PHB p. 195 "When you take the Attack action and attack with a light melee weapon that you’re holding in one hand, you can use a bonus action to attack with a different light melee weapon that you’re holding in the other hand. You don’t add your ability modifier to the damage of the bonus attack, unless that modifier is negative.
If either weapon has the thrown property, you can throw the weapon, instead of making a melee attack with it.
This resolves the thematic head scratching of why I can uses daggers to make two attacks, but not darts due to its placement on a weapon table. It also saves a poor 1st level wizard a few coins.
Is this interpretation correct RAW?