That gear looks fine, but if I had to choose how to spend 12k, I'd just get SCHW, HP rings and a Reaver and go slaughter. You can put banded in the rest of your slots; it won't matter.
Reaver is only like 7k rn apparently
https://unixgeek.com/prices-project1999-Reaver.html
It will be pretty bad until 20 and then kind of bad until 30, but after that it will chunk. In the meantime you can use a MOSS like the above posters suggested. Also consider doing 20-40 in HHK, you will earn enough plat to buy the rest.