I have looked at and worked with the footage. Clearly the shooting crew should be strung up by their toes if this was supposed to be a chroma key job. Either that or they need a real education. That said....
The footage can be used but it is a rotoscoping job not a chroma key. Then the top surfaces of the speakers and monitor will have to be replaced; particularly the Bose units. There are places where there is no color or luminance difference between the surface and the background. It will have to be estimated by the human eye and created.
If that is the low rez clip (1920x1080), what is the hirez? Is it 2K?
At 1080, you are looking at 5-8 hours work. I don't know anyone who will do the whole 1080 clip as a demo for you to be paid for a 2K.
Delivery would not be an AE or a Vegas file. Delivery would be an uncompressed with Alpha or a QT animation with Alpha. 4 Secs of 2K will be a large flash drive or such.