Hello all,
A very big thank you for all the tips and advices.
I will check out both the excess baggages and cargo possibilities.
Appreciate the help!
Mrs. Doolittle,
The baggage allowance is 20kg and I definitely have more.

I was once fined 380 Euros for 6 kg overweight when flying home from Paris. It was a mess and the lady at the counter was a real b...., shouting at me from the moment I arrived at the counter and refused to accept that as a student, I was allowed some weight tolerances. The 6kg included 2 heavy leather coats that I could have hand- carried onto the plane, but with her shouting etc, I couldn't think properly.
swisspea,
You are right. I have been told that sea freight would cost me more as I do not have enough to fill a container. So, air freight is the better option. I have mainly notes, books and clothes.
Schoenen abend!