first big site build on wix, what do you plan before touching the editor?

add the mobile layout to that plan. in the classic wix editor mobile is edited separately, so a desktop page that looks finished can be a mess on a phone. decide forms, bookings, any store bits up front too, since those are apps that change the page structure.

page list, URLs, and the actual text. template comes last. replacing an old site? list every old URL now for redirects, that's the one people forget.