And if you're good you can make $140K base outside of finance (and outside of NYC and SF, too) without too much digging, too.
Furthermore, what does it mean to be good? If you're smarter than your interviewer or know more, they'll reject you. In general, I would say selling yourself has nothing to do with your programming skills.
You're digging a real deep hole and making your project seem remarkably unserious. I would suggest that you stop.