Honestly, it’s not very good. The build is very MAD (multi attribute dependent) as it cares about Dex, Con, Wis, Cha. The two types of unarmored defense do not stack, so your scales give you nothing besides a cool look. As a monk, you want to be attacking often with both your action and bonus action. As a sorcerer, you want to be casting spells. With this build, you will just be bad at both.
Unless I am missing something, I don’t see any benefit to this build.