HTPC Room Config - Need Expert advice

I have a media room where the cable and surround sound speakers are wired to the front of the room and a front projector (Sony HS10) sits on a bookshelf at the back of the room. Currently, I have a TIVO and a DVD player in the front of the room wired into a receiver for sound. The video for the TIVO and DVD players run 30 feet (using the Sony supplied cable) to the projector at the back of the room.


So my question. I was thinking about building an HTPC and immediately ran into the problem of where to put it (front or back). The three options that I see are:


1. Rewire the whole room so cable and speaker wires terminate in the back (too lazy to do this).


2. Put the HTPC in the front room and run a 30' RGB or DVI or component cable to the projector. This is preferred for a number of reasons including noise (HTPC would be further away, ease of using wireless keyboard/mouse, etc.).


--> Question would this degrade the video quality too much? This is the main reason why I would build an HTPC. Or would be it prohibitively expensive? What would be the best video cable in this config?


3. Put the HTPC in the back of the room and run sound and cable 30' to front of room.


--> Would the cable signal be too degraded? Or sound? I currently have an optical cable connecting the DVD player and the receiver and the sound is great.


Thanks for any advice.

JHK