Disclaimer: I have no experience of this kind of thing. But I would push for a better deal, and sell. Of course, if they know that this is your plan, you obvio

Disclaimer: I have no experience of this kind of thing. But I would push for a better deal, and sell. Of course, if they know that this is your plan, you obviously cannot get a better deal. So they have to think that Plan A is not to sell. But ultimately if you don't see how to grow this yourself, you should sell to someone who does. The fact that you're offering them an exclusive license suggests you don't really know how to turn this into something much bigger. Should you push for a bigger equity stake, or more cash? That's harder to answer