No Cyclone here, but have a new 5th wheel (not quite as large as yours)
1 and 2: I purchased some self stick hooks for the towels, and hung them on the blank wall above the toilet, a few inches down from the ceiling. Purchased a matching toilet paper holder and put it to the left. In our old camper I did the same thing, only put it in front of the toilet, as that was a logical place for it. I purchased the holders and hooks on Amazon.
3. Ours came with a towel ring next to the sink, under the cabinet (there's an open area here for a trash can)
4. We had a Fantastic Fan installed, and it works great. We did another one above the loft bed.
5. The hose goes in a holder that came on the camper. All our other sewer "stuff" lives in a plastic bucket I bought at the grocery store. I think it's 3 gallons, so it's low enough to fit under the hookup (5 gallon home depot style buckets are too tall)
7. Wherever we kick them off? :) We just do vacation camping so at most we only do one or two pairs of shoes anyway... sandals and chucks for me, sandals and some hiking-type shoes from Cabela's for the husband. I keep the sandals right by the bed in case I need to put them on quickly to tend to a dog in the middle of the night (they sleep in the garage with the slider open, screen shut. Otherwise I guess we could keep them on the bottom of the closet cabinet, or in one of the drawers?