Limit pages but not products

Hi, I want to have finer control over creating pages, but not products. What I would like is that the user can add only a few pages, but also I want to have the option to limit products by level. So basic has 100 products and 10 pages, adventurous has 1000 products and 50 pages, and pro has 2000 products with unlimited pages. But I cannot for the life of me see how to do this. It seems that the Pro Sites area is greyed out on the number of products as it is taking this from pages.

Even if I could fine grain the products by level this will be a start.