Thriller opening Ideas

As a group we have decided a few different ideas over the past couple of days. We have now come to a conclusion what we are going to be doing.
We want our thriller opening to be modern, and different to any other typical thriller. We want teenages (aged 15 and above) to be able to relate to our opening.
It would open with the party/rave scene. This scene would be very energetic; lots would be going on. The location of the party scene would be at Alyssa's house. Obviously it would not be a proper party, with alcohol. The whole party would just be acting, and we would get permission from Alyssas mum before we film. We would use people from mine and Eloises drama class with their permission of corse. We would inform them of what they need to do, and what our opening is all about so they get a clear idea. We want the party scene to come across as natural as possible, the last thing we want is it to come across fake and over acted. Yasz has said that she would film the party scene, while me Eloise and alyssa would be involved in the party; mixed in with the crowd.
While the party scene is taking place, there will be quick flashes to the scenes where someone is getting murded. However, you will not actually see the person getting killed, we will just make it so you can hear the person scream, and being thrown to the fall, and for an example, seeing the persons face looking up at someone screaming 'NO' and 'GET AWAY FROM ME'. We don't want the murder scenes to be too cliche.
There will be a contrast between to party scene and the murder scene. We find this will come across very effective, as it will build tension throughout as each scene will get shorter and quicker. We want the murder scenes to have a slight link to the party scenes, for example, in the murder scene when the person gets thrown to the floor, when it flashes back to the party scene, someone will fall over in the party while dancing. I find doing this, will make the audience be on the edge of their seats, as want to know what is going to happen next.
Towards the end of our thriller opening, the party and murder scenes will go a very rapid speed skipping from party scene to murder scene very quickly. Then everything will stop, including the party music and the person getting murded screams. Either me or Eloise will walk in to the room where the person got murded ( as it will be one of our friends ) after being at the party. The last shot will be a reaction shot of me/eloise as we have just seen our friend dead on the floor. However you will not actually see the person dead, as we find it would be more effective to just see mine or eloises reaction.

As for the credits, they will be shown in the party scenes. We want the credits to come in to the beat of the music, this will help everything flow better. For example, when the bass of the music is very loud, the credits can shake like when you feel your whole body shake to the bass of the music.