Mini camper for a couple

Hi all,

Another couple of newbies who want to hit the road.

We are a couple from Melbourne who are keen to drive half a lap of Oz.
We are keen to purchase ourselves a mini camper such as a VW Caddy Maxi and to use this as our daily commuter as well as our camper van.

Are there others who have used a mini camper for a 3 to 4 week road trip? If so what are your thoughts on one of these campers?