Your chances of making bank off one book aren't good. In my opinion you should work on a smaller scope book and work hard on it and get it done and published in a few months as soon as you can. You'll learn a lot about publishing, money, writing. Then forget that one and move on to your next book. You'll improve a lot more writing 5 or 10 or more books in 5 years than one huge one. You can still use all that worldbuilding you've been doing, just tell smaller stories within it. Look at discworld for example. You can definitely do it.
>Getting help for my piece of shit diet
You can do that yourself. If you're problem is that you're fat, this is the guide recommended in the fat general on 4/fit/, I read through it and it seems pretty good https://physiqonomics.com/fat-loss/>>22673
Lmao fucking do it my man.
>finish every show with karaoke with anime openings on the projector
I could see that being a hit. There's obviously a lack of raw non-westernised otaku culture in the west, crazy man belting out anime kareoke on stage could carry the passion of an underground idol show if you know what you're doing. Or maybe you just want to do it as a power move, that's cool too.