Want to open a firm for my Insurance consultancy business

You aren't selling insurance? I'm sorry but I don't see very many people paying for just advice. They can consult a few insurance agencies for free, and get different opinions. And given how closely it's tied to someone's entire financial situation, it's something I would be more likely to ask a financial advisor. Forgive me if I'm wrong about this. I've never seen such a business where I am.

How about sending out your proposal to several financial advisors, who can consult you or send you their clients?
I would just call it 'Your Last Name Insurance Advisors.'