Neo you write with so much insight and perception for such a young person. I'm sure that you can do this. I too had mental health issues that needed to be resolved, as well as conventional addiction therapy. The thing is I do think I have pretty good self awareness as well, so I think I can manage things on my own but it doesn't always work. It's difficult for me to ask for help but we really need to. I can really appear as if I have it all together, but part of me still seems very screwed up.
Think carefully before maybe turning your back on AA, it seemed to be benefiting you for a long time - I noticed the very different quality in your posts - and many people use AA in conjunction with mental health therapy. So long as you can keep each type of therapy in its proper place, I think it can work well. I'm sure they will support you again in AA, recovery is a process of growth and learning, good luck on your continuing journey, please keep in regular touch however it unfolds.