It's possible but I wouldn't recommend it. Most laminate companies want a transition very 30' max. If you are going through doorway especially you are getting into a tricky situation. Laminate floors are designed to float. They move with changes in environmental variables. It's a lot easier for them to do this effectively on a room by room basis. Trying to do it all in one big shot forces the floor to move all at once with stress at the smaller junctions.