Tell us more about yourself.
Planet earth is good to start with, but if you could be more specific...
As you work for an airline, you will have more than 500 hours multi crew, so you do NOT do the CPL IR flight test, depending on which CAA you go through, all you may need is an LPC in the sim of your current type or a type rating course on a new type.
Plenty of English groundschool around in Euroland, so why not ask who will do the conversion easiest, quickest and cheapest for you.
Sorry, don't know much about distance leaning, but not so sure you need to take all subjects with your experience (again depending which CAA you talk to). IP