That’s okay with us, quite a few developers have similar setups. The issue our Creator Guidelines is specifically calling is for those who create what some people tend to call an “asset flip,” where they create a large number of product pages with slight variations of the same thing to try to make their pages show up more frequently.
Note that you might have more success having your free version on the Paid version’s page as a “Demo,” that way there is only one page to manage, and anyone who comes across the free version will also see that you have a paid version. Generally they’re more likely to convert to a paid customer that way.
Hope that helps