So my question is: will it be possible for me to plug the Bee on the breadboard, is there enough sockets for it ?
This depends on the breadboard that you have. But, in general, the answer is no. The XBees use a very nice, but non-standard, pin spacing. The XBee pins do not line up with the holes in a breadboard.
There are shields that fit an Arduino that an XBee will mount on, or there are breakout boards that the XBee will mount on that have the more traditional pin spacing, so the XBee can mount on a breadboard.