Music used in the opening 2 minute sequence 1st Dec

Readers,

I have been set the task of finding or composing music for my 2 minute opening sequence. My initial thoughts were start with some gentle music at the start of the drive and as the car draws closer and closer to the main school the music builds to a dramatic aery/spooky music, then this dies away as the car drives away. The music can then change to a calm/uplifting melody when she meets the teachers and students. This will then continue while she is becoming accustom to her new school and her new friends. When the stalker starts to walk in the music will suddenly be replaced with a short motif of music that will be repeated/played every time the stalker's presents is felt. The final scene is of the main character in the 6th form common room having fun with her friends when she turns to see the stalker out side staring at her through the window. At this point the music will play the motif but crescendo to fortissimo (very loud) and then suddenly stop with silence from everyone in the common room as they all stare at the main character, there will be a black out straight after this.  

Examples of music for my 2 minute sequence:
Start of drive and going past the main school entrance: http://www.youtube.com/watch?v=N4oIwIlRXV8
Meeting everyone: http://www.youtube.com/watch?v=qycqF1CWcXg

Motif for stalker (ideas)-
Jaws theme tune: http://www.youtube.com/watch?v=ZvCI-gNK_y4
Silliness/fun in common room: http://www.youtube.com/watch?v=RbtPXFlZlHg