Note that the questions re: business plan are more appropriate for a startup unless you’re applying for an executive role, in which case you aren’t interviewing in this way anyway. (Interviews for exec level positions are MUCH more thorough/prolonged and take a lot of time given the $$$ and responsibility involved).

Also, the questions re: benefits etc. are more well-suited towards the recruiter you’re working with or HR; it is highly unlikely that the hiring manager knows enough about those things to answer your question effectively.

Everything else is pretty good, though I wouldn’t ask it at once (overwhelming and a negative social signal)