Nice goal that your are pursuing with your website but, just in case, are you aware of the rules about .cat domains?
"You do not need to be Catalan to have a .cat; the only requirement is that the website associated with your domain has meaningful content in Catalan or promotes the Catalan language or culture.
The .cat is a domain open to anyone wishing to be part of the Catalan digital community."
"Having a .cat domain is the first step, but to publish your website you need to take four key elements into account:
Content: you need to have your website content ready (text, images, videos). Remember that, in order to comply with the .cat Domain Registration Regulations, the website must have meaningful content in Catalan."