I'm looking into setting up in-wall wiring and using HDMI wall plates for that clean, finished look. The problem is when it's all said and done, there will be 3 separate HDMI cables joined by two couplers. There will be 15' HDMI cable in the wall, 2' from the wall to the TV, and 6' from the wall to the receiver (I could always get a shorter cable).
With all these cables and couplers in play, should I be worried about issues with the signal? Obviously I'll test everything before it goes in the wall with a 1080p signal but I'm not sure what else I should look for. I'm a noob when it comes to this stuff.