We have become very accustomed to sleeping off the ground. The small bed is usually pretty full with stuff. Chuck had some grating material attached to his rack that mad a good summer sleeping platform. I'd be very tempted to look at a RTT for the back of your rack if the kayaks would work up front. The RTT would act as an awning for the back and a nice place to set up the kitchen
Those foxwing awnings do look cool. Jury is still out in my book though. Quite a few end up selling them it seems and the cost is on the high side. Watch EP for them, they come up from time to time.
I like my CampingLabs awning. There are some similar ones available. CVT awnings
would be top of my list today.
I recently picked up one for my Dad's Westfalia. http://www.busdepot.com/ezyplus
Very affordable and simple. Not attached to the roof for travel, but looks pretty compact and better than a tarp.