Thanks for the tip... I went to the Honda dealership where my friend works, and after filling the system we had a major leak... So we had to empty the system...
He wanted to put 750 grams of R134a in it, but after 650 the system just wouldn't take it - maybe it was already leaking, but I don't think so..
Compressor works - the temperature at the vents was 9 degrees (Celsius) - 48 deg F.
I have an appointment tomorrow to have the condenser checked, the leak was very near the fittings... hope it won't cost too much!