I have fought with what to do for my TV computer for a long time, I use mine as a video player primarily, do some web browsing, and occasionally I have to do some quick coding / hacking on it.
I tried just having USB cables to a 60% and a laser mouse, logitech's proprietary wireless offerings, and other brands of blue-tooth brands before. Anything wireless just wouldn't do well, signal drop and jittery at the range of my sofa.
I know you said you wanted to avoid blue-tooth, but I finally settled on the Apple 60% keyboard and track pad, despite really not liking track-pads. It isn't as bad as most, and the blue-tooth is rock solid, great signal latency and range, I can even game with it some. Also, the Linux kernel and xorg drivers support the silly gestured the track-pad can recognize.