You're asking me to be an expert in your businesss. I wish I had time to know all there was to know about every industry people post about, but I don't. Establish some numbers that would make your life comfortable, and which would motivate you. Don't worry about industry standards. This is a place to start.
People get too worried about what someone else is making.
Focus on you. Figure out what value you'll add to the employer's business. Try to estimate how much profit you could bring to their business, above and beyond what they're making now. Check your desired income and options against that. Don't expect to be paid like a founder.