First your lights....take one bulb of each type out and lay it beside the computer. Get a count of them and go online to www.superbrightleds.com
and they will have the matching bulbs if you don't want to change the whole fixture. I will do this for the rig as I have done for my Cabin cruiser...went from 11.5 amps to "".08 " amps with led replacements running all lights at the same time. All sizes all colors, intensities and all kinds of colors....I suggest a nice shade of red for the bedroom
I'm curious to see if I'll need skid plates as well, don't like the rollers, they hit before they needed to on my old rig. I weld, so I'll probably just put on a few small "sacrificial" plates near the bumper...check a local weld shop...very easily, cheaply done.
For the entertainment system.....I hear ya brother! I'm letting my wife handle that at our pickup and orientation...she's taking a DVD and an Ipod and we are not leaving till "everything" works. Get back with your dealer when its hitched up again or ask him to show you on a similar model. Around next Friday you can send me a ping and I'll let HER respond if you still have questions. lol
Take care and I think I'm going to love our 3008w.