If you have a chance, you might swing by the vintage trailer show in Hemet the 25-28 of April. It is at the Golden Village Palms RV Resort. These are older models, but it will give you a chance to see how they are set up. Sometimes it is difficult to imagine just how big or small they really are from a blueprint or photo.
A friend loves her
Oliver, and says it is the best trailer out there, so you might consider checking on them. I think they have a couple of models in your size range.