Domo,
I've taken some advice here and there (lawyers, accountants), but not a comprehensive professional advice.
It seems anyway that, in order for such a setup to be viable, I should have part of the business carried out in Ireland, and a physical business establishment there also. The second point is easy to achieve, but the first one ... it depends on the opportunities I will have, which spans all Europe. And I cannot predict in advance that my clients will be in a country or another ...
Thank you for your answer. I'm going to seek some comprehensive professional advice.