Yeah I don't think Fe creative for you, but I don't know SEIs that well, so idk for sure. But yeah I find it very unlikely that you'd be an SEI with taking things seriously like your 4th sentence. Sounds like Ethical base and intuitive ideals also make sense. You'd have to be EII or EIE based on that and I think EII makes a little more sense, to me anyways. The "right path" thing with all the strong moral principles, it sounded Fi with some strong Ni, I don't know if EIEs care about Ti in that way. Maybe investigate Si HA vs Si PoLR, they are pretty different tbh (one is really liked, the other one is really hated), should be easy to decide based on that. Well that's it for IE-based analysis
(I really prefer going by traits and styles, attitudes, values instead but this "type me" intro was too short for that)
A little unsolicited advice lol, take it or leave it - Make sure you aren't just depressed before you type yourself Se PoLR based just on that