Cool. I'm leaning more towards SEI now.
You should definitely consider SEI. Your task will be to decide between SEI and IEI, as far as I see.
I'm just telling you what I'm thinking.
IEIs tend to be more "connected to the mind", more abstract, and less conscious of the body.
the impression you give is more "shallow and simple". Just like myself
I get the feeling that you are constantly under the influence of impressions from the environment and you body, and you are trying to keep them away so you can concentrate on what to say in front of the camera. This is normal for SEI.
If you are SEI, then Si is probably something that you experience as useless and an annoyance, because you have never had any use of it. So it can be hard to self-type as SEI.
And you said your best friend was IEE? That's semi-dual. Good relation.
Anyway, hope you find your type.