Braces in Los Angeles

Orthodontists in Los Angeles California

I’m thinking about getting Invisalign instead of the traditional braces. I have an overbite thats kind of major, so would they be able to fix this?
and I’m having a hard time understanding the treatments. Are there only two treatments? express treatment for minor and full treatment?
If i get the full treatment, can I cancel anytime I want to? or do I have to stick with it until the end results? thanks!