Most plasma mounts I have seen are very easy to install. Mine took about 30 minutes and you could probably hang your body weight from it.
Do you have an AC outlet below the panel? This product is a quick and easy way to get AC up to the panel as well as your AV wiring:
http://www.panamax.com/products.cfm?...il&id=221&ly=h There are several versions of that one, and other brands too.