Bed Modification

To get an idea of what you can do, you might look at floor plans that have a bed that the bottom folds back to revel a small couch. My friends had one like that. I agree, you have to look at how the bed configuration -as it is- is part of any storage or furnace/electrical systems. Perhaps you can look into putting the bed where the dinette is. You can make the bottom part fold back for travel. You might be able to incorporate a couch or something where the bed is now, depending again on the storage etc. setup. Good luck.