Oh, dear - a lot of the dancing, painting, and other sorts of physical things are very sensate, I have to admit.
At the same time, though, you really do remind me of my INFP friend: very tangential with every thought running at once - no matter whether it was about glitter and dancing or calculus and physics (Ne), very spacey and dreamy (not that it's a bad thing ), and her emotions are pretty much deep and from her core (just like you - typical Fi here). Having an INFJ as a best friend, I feel like you wouldn't be an INFJ solely based on the fact that they tend to be more organized in explaining themselves and get straight to the point about how they feel. (Also, they wouldn't be trying to pour their whole selves out in one entire thread like Noah's Flood. )
Plus, you said that you "think intensely and feel intensely." What do you mean by thinking intensely?
Finally, which do you identify more here: "ISFPs are less fantasy-oriented than INFPs. These types are often confused, however, INFPs lean strongly to daydreams, poetry, prose and more philosophical pursuits; ISFPs often live out 'id' experiences rather than writing or even talking about them." (from typelogic.com/isfp.html)