Hahaha...very well :P I was just reading a "portrait of an estp" and the nickname given was "The Doer." Of course I do things, but I don't always need to be doing things. Other parts of the personality did seem to fit though.
The Way you described the difference between an "Se" person and an "ne" person explaining things was quite interesting, I definitely do feel more like the Se type.
Also, I think ESTP descriptions make them sound always hyper. That's not really true. A lot of the ESTP's I know are super chill. You could possibly consider an ISTP as a type you identify as well... There are pretty extroverted ISTPs out there (I'm not really one of them, but I've had phases before). Tertiary Ni as an ISTP might explain why you enjoy theorizing about things. Tertiary Ni for me has always been a pleasant, fun type of process for me. They call tertiary functions "relief" roles, and that's exactly how it feels.
As a side note, ESTP's I know tend to have an excellent memory of events. ENTP's I know.. not so much. Sometimes it will take my ENTP half a movie to realize he's already seen it before. Also, another very striking NTP trait is they're always thinking/brainstorming/talking about their ideas and concepts of things. It energizes them, it seems. It's a huge part of what makes an NTP an NTP.
I have an inner monologue that sounds strikingly similar to something off Animal Planet.