Hi sjaelan!
I didn’t had any luck making it work as I intended it to work. As what Caleb said, any further will take some customization.
In my case, I did what Thomas suggested. I have the old product redirect to the more recent product. In the old product page, I just have something saying that our part number has changed to the new one. Then I just provided the link to redirect them.
In your case I think you could do the same. You could maybe also use the variable product feature to list the “featured designs” to choose from as well as a “customized” option.
Hope that helps! ??