For some reason I can't enlarge your photo attachments so I can't really see the specifics you're talking about, but will just address generally some of the issues mentioned.
First, you mentioned
PB's NL (Natural Look - you'll notice we abbreviate speak - you'll find a list of some of the more common uses here
http://www.detailcity.org/forums/aut...onym-list.html). IMO you will really enjoy this product for dressing/protecting all of your vinyl/hard plastic surfaces (some even use it for leather).
As for cleaning the vinyl areas, according to
PB's product page, NL has some cleaners notice it mentions dust and light grime. Good enough for your personal vehicle that you touch up regularly, but probably not enough for your case where you're cleaning up after someone else. Since you already have Simple Green you can use that, diluted appropriately. After you get through that supply you can sure look for other alternatives. We will all have our own suggestions.
Carpets/cloth seats - Thorough vac to start. I also have a 5 hp Craftsman it should do a good job. You mention your Wife has a "Green Machine". Is that the Bissel Little Green Machine? There are several guys that use that for their extractor. Since you've got it, why not give it a shot. If she has that she also probably has some Bissel carpet/upholstery cleaners she uses with it. I would be inclined to try those chemicals first before investing in something else. If you decide to do this on a larger scale, my recommendation would be to contact either a carpet supplier or janitorial company for some carpet/upholstery specific cleaners. I have a couple of favorites, but there are almost as many options as we have waxes/sealants.

Another note, on the LGM I have not used it myself, so I'm not certain, but I'll bet your Crafstman wet/dry vac is going to have more lift. So after "extracting" with the LGM go over once again with your Craftsman.