I use e-bags (medium) for clothing organization. Makes it easy to find things in the long storage compartments at the rear on either side.
I travel with the sofa reclined (better visibility out the rear doors) and sleep twin bed mode using a sleeping bag. It's easy enough to raise the sofa if I want to relax at night and watch TV.
I swivel the front passenger captain chair and use the slide out table (one "leaf" only). The slide out table also is handy for food prep giving me extra "counter" surface. Opening both leaves of the slide out table blocks access to the front chairs and is just badly designed. I may remove the fold out leaf at some time in the future.
AllStays app is invaluable. I haven't looked at a hardcopy campground guide in years. I drive to SE Alaska every other summer or so and have never gone wrong with AllStays.
I'm still trying to figure out the best utilization of space for storage but I agree with other posters who recommend getting things down to the bare necessities. For my trip to Alaska this summer I'm going to get a Stowaway2 hitch storage box to carry extras for a month and a half on the road.