I wouldn't buy the Obsidian... Buy some normal Mothers Milk, steep it for 6 months, and you have obsidian. If you really want, you can even buy a frosted black glass bottle for like $3.00 on Amazon.
Other than that, your order looks good. However, you should add some Nicoticket to that order...
Nicoticket | eJuice Eliquid Wholesale | Made in the USA They're also available on Giant Vapes.
In this journey, you'll find that more expensive doesn't necessarily mean better. ITC Vapes is solid, Spoon Licker OG is bae and just as special as Mothers Milk, in my opinion. Also, check out
Casey Jones Mainline Reserve. They are a little more expensive than ITC, but still very affordable. Josh has some amazing mixes, like Renegade, Pink Rabbit, and Gold Rush.