If you are former tent campers - with the kids - you should have no problems.  Whatever and wherever you stored all the "stuff" before is still a viable solution.

When we tent camped, a lot of our stuff stayed in the trunk of the car or in a Rubbermaid-type storage box.

Certainly, you did not keep everything in your tent and you don't have to keep everything in your Trailmanor.

I think that the storage limitations of a Trailmanor are noticed more by those who had other types of trailers previously.

If you are looking forward to camping with your four small children, you must already be a creative, flexible person.

Have fun with your family and your new Trailmanor.