I think that the Buddha was a moral teacher. I agree with most of what you've said (except about the Advaita part... since the Buddha rarely, if ever, mentioned a concept of God).
Thank you That's not how I, personally, interpret it, but you're free to interpret it however you wish.
I think of Radharani as being much more than the illusive power of God... since She's His counterpart and the part that completes Him. Also, She leads us closer to God and helps us realize Him in a much fuller manner, unlike His Maya potency, which can distract us from Him.