Home Theater Component Placement Ideas

I am in the process of building my Home Theater -- but I have a question:-) If I place my Rear Projection right in the middle of my viewing wall and then place a rack to the left or right I am faced with running two speaker cables of differing lengths. I know that I could place the amp somehow in the center/front but now all my interconnects need to be pretty long and that can get pretty costly. Any ideas or should I just reserver myself to getting one cable at 5 feet and another at 10 feet (roughly)?

Thanks for any input:-)