Hope I can help. For the 32" flat panel I had to change mounts. I think the original would have been plenty strong but it wouldn't attach to the bigger tv.
For the power strip I mounted it on the front of the "nightstand" right at the top. I purchased a strip with an 8 foot cord and a replacement plug for the end. I cut off the original plug drilled through the underbed storage boxes and ran the cord over to the recepticle for my central vac. Installed the new plug and plugged in there. If you don't have the central vac you would have to drill through to the next compartment where the water pump is located. There you could access the existing recepticle. I'm going to post up some pictures later today. It will be better than my description.
For the door- the upper cabinet door is the perfect size so I had my dealer order a door, handle, hinge and catch. He needed my VIN # and the size of the door. All total it cost a tad over $60 w/ shipping for the door. There is nothing inside there and it is quite a large space and as deep as the counter/Stove above. Must just be a cost thing for Keystone.
Off to take some pics and hopefully post them up in a little while.