That is one great problem to have!!!!! A very exciting decision to make. I myself am a Jeep owner and my first instinct is to tell you is option B. That would be perfect for every aspect with the exception of one thing, you are a family of 5, and while you are traveling 3 people being squeezed in the back of the Jeep for long periods would not be ideal. For your size family if you have the option to go with C big size van with that set up would be the best option for your family size. Thats my personal opinion, the van would have more room for the family over all the options, and lifted with an upgraded suspension like the picture in option C, your golden!