So...what should I read next?

I have similar tastes. I'm a huge fan of Ally Carter, she writes a book series about a thief and another series about a girl who goes to a school for spies. Although they are a different style then the books you listed, but I still think you would enjoy them. Another option is book called Paranormalcy by Kiersten White. This book (soon to be a series) is a good fit for you based on the other books you have listed. I hope you find some amazing books. Good luck.