Welcome to DhammaWheel!
I think it's good to explore different schools of thought and find one which resonates, it's much easier that re-inventing (or perhaps, rediscovering) the wheel. I have enjoyed a similar smorgasbord of religions/philosophies on my way to Theravada. I hope that you find whatever it is that you are looking for.
Four types of letting go:
1) Giving; expecting nothing back in return
2) Throwing things away
3) Contentment; wanting to be here, not wanting to be anywhere else
4) "Teflon Mind"; having a mind which doesn't accumulate things
- Ajahn Brahm