In-house HDMI wiring

Hi,

I am building a house and in the process of designing a wiring plan. I want to run HDMI wires in the walls. I will have 4 media outlet plates, 3 that will have the potential of outputting to a display and 1 that will serve as the master media outlet. all will have the ability to accept HDMI input from a source. basically, i just want to be able to plug in a source into any of my 3 media outlets and be able to display it on any of those 3 media outlets. also, be able to display 2 separate sources on 2 separate displays simultaneously. Ive been looking into the technology for about a week or so now and ive come up with a design and i wanted to get some feedback about the feasibility of it. im thinking of getting a 4x4 HDMI matrix switch that will receive input from my outlets and output to my a/v receiver and to my outlets. (see attachment)


also i have 2 runs that are about 40' and im wondering what the pros and cons are about using 2 CATx cables carrying my HDMI signal. is there signal loss associated with the dual CATx that wont be there with an extended/amplified long HDMI cable?

there is also a distinct possibility that im making this way more complicated then it has to be... if that's the case feel free to bring me back down to earth!

appreciate it,
tim

im just looking for a decent signal @1080p... not running 3D. i have the output of the receiver going into the input of the matrix so all any input into the outlets gets routed through the receiver to pass the audio signal to my built in speakers.

basically, all the outlet inputs into the matrix will be permanently fixed to the output line of the matrix that is plugged into the receiver. the matrix input that carries the receiver signal will be the switchable one that can be passed to all or one of output outlets.

so if beyond 30' gets tricky, would you recommend running dual CATx cables carrying the HDMI signal or is that not ideal?

thanks