Joe,
Just as in the US, Europe seems to be a mixed bag with some very advanced therapies in some places and few choices in others. What is your ability to travel within the EU for treatment? Assuming your bone scan and CT are negative, there are still many good treatment choices.
Because of the high volume of cancer, I'm sure a surgeon will ask for a re-staging MRI to assure that there is no extracapsular extension.
Other good options are (1) a brachytherapy (either high dose rate or low dose rate) boost to the prostate combined with external beam radiation, (2) high dose rate brachy monotherapy, and (3) SBRT (monotherapy). I don't know which, if any of those, are accessible to you.
One option that is only available in Heidelberg, Germany is called carbon ion therapy. They were treating intermediate risk patients like yourself with a combination of a 6-treatment carbon ion boost coupled with IMRT over 6 weeks. However, they might agree to coordinate the IMRT part of the treatment with a local radiation oncologist in Nice. Here's more info about
this treatment:
Carbon ion radiation therapy for prostate cancer- Allen