Hi Deborah
Have only had my van since april and am absolutely loving it,and you and your kids will too,I would say first get a copy of practical caravan as it has diagrams of all the different layouts you can find,then go to the dealers on a sat or sun and have a look at them all in 3d so to speak,take your kids too!then I went through all the private ads,ebay and such and found that one paricular layout stuck in my mind,then its down to budget etc...you find with dealers you might get a warranty,however some private sales have a lot of equipment thrown in,Am sure everyone will say damp is the big issue so dont be afraid to get a damp meter,there are so many other things but you've picked the right place to come for help,the people on here know their stuff and will be only too willing to help,You wont regret it,its a great life !! xx