I am an absolute supporter of louvered roofs, even if they are expensive. Once you have sat under something like that and can adjust the louvers individually, you won't want anything else anymore.
If you are not pressed for time, ask for display models in showrooms or at trade fairs.
You can also combine a louvered roof with a large sunshade so that you don't have to cover the full 7 meters. Or you can additionally place a beautiful, already mature tree that then shades the rest.