What Skool setup would you recommend?

What setup would you recommend if I want to have a free to join group talking about my topic and offer free courses. And also offer online courses and a Mastermind?

Will the free members be able see that I also offer paid groups or having gated content i Classroom (similar to "opens for Level 3")?

i.e they click on "Classroom" to access the free courses will they also see my locked ones (they pay for?). And how do I link to my Thrivecart/sales page for an easy next step for people that want to get/buy more stuff?

Or do I have to pay for 3 groups a $99/m: