Glad to have you join us.
There's PLENTY to read here about navigating primary/secondary relationships. I encourage you to read and READ and READ this site as well as others you'll find referenced here.
As you're no doubt aware, the horror stories abound regarding these entry steps and there's certain things all parties need to understand going into it.
The more you can get these potential speed bumps out on the table from day one for discussion - the more likely it is you will build something beautiful and avoid contributing to the bad stereotypes that exist.