Cable for HD picture only

You can get excellent long run HDMI cables from Monoprice and Blue Jeans. I have run 75 feet with a perfect picture.

HDMI is the only cable type that will transmit a 1080P image. Agree with the previous post, Blue Jeans cables work very well and are cost effective. Your proposed cable set-up is the same that I use; 35' HDMI from a Pioneer Elite BDP-09FD blu-ray player to my Sony VPL-VW85 projector and 5.1 RCA cables from the blu-ray player to a Krell HTS. Audio processing is done by the BDP-09FD, the Krell HTS is just used as a volume control, albeit a very expensive one!

Agree with both posts. I have run 35' HDMI with excellent results and used RCAs for audio, a much shorter run, with excellent results. I purchased my HDMI off Amazon.
Best,
Dave

Ok , thanks guys .