Take a look at my relatively simple build in my Chevy G20 high top camper van. This is a basic setup to make the van functional before doing a full remodel in the near future. This set up includes auxiliary battery power, shore power, a queen sized bed, a heater and a simple storage and kitchen working space. Pretty basic for a lot of van builds, but still a step up from my old subaru outback camper build.
Future plans include, solar power, better insulation, more battery power, a water tank and a more refined interior.
I also plan on doing a small lift and larger tires, and a selectable locker to help tackle tricky roads.