OK.... Starting as a true Independent is not an easy proposition.
Do you have a no-compete? That could limit you in moving current customers over.
You can go true Independent - which means you'd have to negotiate contracts/licenses with Insurance Companies - and IF they agree to take you on, you have to guaranty them a certain premium volume for the year. And if you don't meet those production levels, they drop you... Or, if your loss ratio is poor - they drop you. Those companies almost always pay higher commission rates. But... you'll also be on the hook for your monthly business expenses - rent, utilities, advertising, accounting, technology, marketing, leads, employees, etc....
Or... You could sign up with an established Independent Agency - but then you're going to pay them a percentage for the access to their Insurance companies, and for office expenses, etc....
Working for a captive, you're probably an employee - which is a good gig tax-wise. If you go on your own, prepare to be loved tenderly by the tax man and handle a lot of accounting processes. Or, hire a CPA and that's more $$$ out of your commissions.
Going Independent, there is no salary. It's 100% commission. And no renewals for 6 months to a year. So if you don't write, you don't eat.
Have you approached your captive insurance company's Regional Manager to look at an Agency career with them? The captive support system for new Agents is usually quite generous.
Anyhow.. My offer still stands.... IM me if I can help.