Because nowadays, games are made with teams of more than 20 persons, take several years to create and cost 20 million dollar, on average. You are not really giving the impression you can even remotely meet this, especially not if you keep insisting getting the rights from Epic "won't be a real problem" while I doubt Epic will be as enthusiastic as you are about this project.

Then again, it's a better attempt than what has been done before, and I don't know enough about game design to rule out the possibility of making a commercial game with an outdated engine, 3 team members and no rights on the characters you're planning to use. Maybe you have good connections with Epic or something, I wouldn't know. But to me you're giving the impression of someone who just suddenly had the idea "hey, let's make JJ3" and started with it without much planning. I hope I turn out to be wrong