I have a HR-21-700 already hooked up in my family room and I'm using the component output from the receiver. We got a new 20" HDTV for the kitchen...I can easily run a cable from the family room reciever via a crawl space and a wall plug. Can I use one of the HDMI outputs from the receiver to mirror the kitchen TV? Also, the signal would have to travel on about 75' of HDMI cable. Thanks!