It's all up to you if you're insisting on building the living area yourself, you can do whatever you want. One thing to remember is that you should be able to register it as a camper as opposed to a cargo trailer if you're building a living area in it (depending on your local laws). In Massachusetts where I currently reside, registering as a camper instead of a cargo trailer would benefit the owner because of a decrease in registration fees. In Massachusetts you must pay by the lb to register your cargo trailer. Registering a cargo trailer with a GVW of 7,000 lbs is not cheap in this commonwealth, however registering a camper is far cheaper and not "pay by the pound".
Personally I think you're over thinking about CDL requirements. If your truck is not registered commercial and you're not using it commercially, then there is no reason the police have any reason to look at you. I have seen fifth wheel and goose neck trailers over forty feet in length designed to be pulled by one ton pickups, so a thirty foot trailer really shouldn't be a big deal. If you're that concerned about it, look up your local laws in regards to vehicle length allowances.
Last edited by fabiodriven; 11-13-2017 at 08:15 PM.
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