A New Purchase since our move

We are now in Virginia and looking to develop some property we have owned for several years now.  Our plan is to use a travel trailer as a headquarters and place to stay until we have other living quarters ready.  We purchased this trailer from an individual.  A 1994 Mallard 24 foot.  It has a nice floor plan.  Now we must get it cleaned up and some things moved in.  Also need to down size some more.  This could take a while.  It is hard to get rid of stuff you have had for years especially if you like it.  Is the stuff really necessary?  Do I use it? How is it important to me? Is there a good reason to keep it?  I came from a family that never threw anything away.  I am not that bad but I do have some things that I need to think about.  One person I read about said it took them 2 years to down size sufficiently to live in a smaller space.  I don't want to take that long.  Anyway here are the pics of the trailer as it is being delivered by the previous owner.  He was gracious to do this since we did not have a proper vehicle to do so ourselves.  We would have probably had to rent something.