Hi,
Thank you for your very extensive project description. My name is Jaap, I'm a native Dutch webdesigner/webdeveloper, based in Germany. So, if you'd like we could communicate in German from now on.
Regarding your wishes, I can offer you a complete solution for your website wishes. If you'd like I could host your sites on my server (based in Germany in a big datacenter). There I could arrange it in a way that you can manage the content of all three sites from one central place, how does that sound?
Is it possible for you to show me the designs/websites you already have? And the logos? So I can get an idea of how you want it to look like. Of course I can deliver you a responsive and SEO friendly website.
The price I've mentioned is based on my first impressions about the project, I'm open for discussion. I'm excited to work together with you.
Please contact me to discuss details.
Kind regards,
Jaap