Live Chroma Keying to Projector


I’m designing an experience for music festival goers where their images are recorded in front of a green screen then sent to a projector on a time delay. Would BoinxTV be something that could suit these needs?

More details:
I’d be using a MacBook Pro.
There will be two cameras recording two different visitors at a time.
Their images will be sent to one projector on a 5 minute time delay.

Thank you for your help!