Most of the good sites that aren't Mangadex take a pretty hard cut of your support from it's userbase, and not a lot of them retain as large a server for storing the manga in question.
Either you work for a publisher (impossible), find one of the Black Companies who will treat you right (Impossible), or put everything up on one of these Grey Area sites like Mangadex.
I swear if I see one more fucking AI advertisement, I'm getting Dex-chan pregnant and not paying support or restitution.
[EDIT]
Forgot to mention hosting your own servers... Which is (expensive).