Searching For The Perfect RV

By mainstream standards, my family is considered to be homeless. "Homeless, living with family" to be technical since we've been staying with my mother in law, but it's all the same to me. I can't even begin to tell you the long search we've been through in these last 2 months. Finally we've decided if we can't have our own home to settle down in, we will find a place where we can be mobile and teach our children about life in..... An RV! But what would our criteria be?
First of all, it has to be running, preferably with no leaks. Leaks can always be patched and fixed. Secondly, it has to have a bathroom and kitchen area, which means pop out tents are a big NO. We also need enough room to be able to move around in, at the very least. There's 5 people in our family so we need a little bit of wiggle room.
We've been considering a Minnie Winnie for about a week, but I'm afraid it may be too small. I have also been eyeing one of those 32' pot belly style RVs. They are my absolute favorite and I think they are the cutest.
One thing is for certain though; whatever we choose, this will be a new journey for my family!