Hi Jessica,
Congratulations on getting your Rushmore.
Let me mention a couple of things about the entertainment center. First, watch the cables on the back of the TV when raising and lowering it. On some units, including ours, the cables get snagged and rip the antenna connector out of the TV. Inconvenient if in warranty, but very expensive out of warranty. Heartland replaced our TV. I now have the cables tied with velcro ties and taped to the TV, and still watch while operating the lift.
When you get around to piping TV audio to the Panasonic Surround Sound, you'll need some extra cables. Ours came with an audio/video cable connecting the Surround Sound unit to the TV (Yellow/Red/White RCA phono connectors). This is what allows you to play DVDs and route the audio and video to the TV. You'll get a better picture if you install an HDMI cable to connect the 2 units and switch the TV input to the matching HDMI port. If you do that, you can also move the Red/White phono connectors on the TV from the input jacks on the side to the audio out jacks on the back of the TV. Leave the surround sound side alone. Then when you're watching TV with the A/C running on high, you can turn on the Surround Sound, set it to AUX IN and get audio thru the overhead speakers. Finally, if you end up using a Satellite TV receiver, get an optical audio cable to connect the Satellite receiver to the Surround sound and another HDMI cable to connect the Satellite receiver to the TV.
One caution: if you start working on the connections to the Surround Sound unit, be very careful while moving it around. If the coax cable
that attaches to the FM antenna input is stiff, you may find the cable is stronger than the connector mount on the surround sound. It can break the connector off.