Dogma Free

Excellent news,Chaos Magick is not the most exciting system to study,most of it you most likely already know since you said you have a long history of practice..It's just the same old systems without the fancy toppings,Cast it and forget it
Sigil work etc..You will be a pro by this time next year.

Wiccans don't believe in such a thing as heaven or hell. Some believe that they get reincarnated into another being or something.

You don't actually need to have a particular deity or have a deity at all. Some pagans walk alone in their path. Some do have a deity. Just do what you feel is right