Considering converting cargo trailer to RV - need advice

After reading all of your comments & suggestions I'll probably start looking for a fairly short toy hauler that I can modify. I just remembered that one of my late brother's closest friends owns a local company that specializes in mobile home parts - primarily windows, doors, plumbing, etc but he'll be a great resource & may know where I can find something and will be a great source of knowledge.

Thanks for all of your responses.