Setting up a van?

I have a Savanah 2500 cargo van and want it set up for rural camping for myselfand 4 young kids. I don't need anything fancy, but what would you recommend I consider for a simple setup to make things easy? There will be no utility hookup. Open fires are usually permitted. I have an old Coleman gasoline stove for cooking and will probably bring a small utility trailer to use as a table.