You think I should advertise?
I started to get a feeble impression you were doing this already
To be sure, that is a question I can sometimes answer for clients, but it is a very, very fact-based inquiry and takes many hours of research. Let me know if you're interested in that.
That said, it looks to me like you are flying solo. Most people who do this don't fly solo. They do it with legal counsel. Without a knowledgeable lawyer at your side, you risk rocking the boat in the wrong direction.
One of the services I can provide (Spam Alert!) is analyzing your business closely under any or all of the states and determining whether you really do require licensing.
Obviously, to determine whether your business in particular needs to register in any state, I'd need to know more about your business and then take a close look at the state's regulations to apply the latter to the former.
But reading through your posts again, I saw a lot of useful information too. So never mind, I'm just a cheeky monkey