Hey, Its possible to pre-create sites ready to safe network? Or how hard will be create site on “finished” network?
Static sites can be deployed without any changes. Just drop the root directory with index.html into a safe container and any browser should be able to open it.
For responsive sites you could use React Framework for example that will render within your browser.
You could store data on client side and populate the website again using browser stored data and/or download new pieces of data from Safe Network by checking for certain XOR folder and updating the site accordingly with latest data.
I would not go in more complicated designs now, better to wait and see how one interacts with the safe network api and how it integrates.