Hi,
You can configure the domain aliases of your site in Site Manager -> Sites -> edit your site -> Domain aliases tab. There, you can set the default culture for given alias and also the URL redirection - so, you can redirect the user to given document if she types that domain name.
Regarding the texts - you can use
macros as well as for the images (or, just use different page template for each language version just with that modification you need).
Best regards,
Juraj Ondrus