I've finally sorted out my offers!
I've gone for the simple option of offering my Write Your Business Book community as a one-level subscription model ($27/month or $270/annual) and keeping my programmes (that were previously up as Premium and VIP levels) separate. They are currently showing in the classroom as one-off payment options. I'm in the middle of moving all my stuff over to Kajabi so there will be sales pages and links over there eventually. I've added a 7-day free trial for the Skool community, which I think is a no-brainer. So eventually I'll have everything on Kajabi (website, courses, funnels, sales pages, email list, etc.) and Skool for community. All my programme members will get free for life community membership. I'm guessing I can add them in manually to give them that? There's not enough characters on the About page to detail everything, so I've put it all on my website at https://www.writeyourbusinessbook.com