I think they call the smaller bed the "RV Queen", and it is smaller than a regular queen. Different sheets required.
Another issue with the LTV on the Ford Transit chassis, is towing. If you're ever planning on pulling anything, better check the towing capacity. The Ford Transit chassis has comparable engine/drive train specs to the Sprinters, but it's towing capapcity was 3500lbs versus 5,000lbs with the Sprinter cab chassis. We planned to pull our Wrangler sometimes, and needed the Sprinter's extra capacity.
That may have changed with newer Transit cab chassis models, I thought I read somewhere that they were trying to beef it up, but it's worth looking into, before you buy.