Really nice rigs!
I have to include my wife on this because she needs the most help getting in, strapping in the kids, etc. I'm leaning towards boards and, RankRam, I like yours. One thing I need to know is what boards have a tread surface to the very back of the rear door? I saw an owens board in JCwhitney and you could see that the tread ends well before the end of the door. Looks like this would prevent you from standing with 2 feet planted standing in the doorway.