i have the panel van version of this model with only window on the rear doors.
i can recommend it for a small van conversion and would still recommend the rear windows as they are good for light inside.
i have found that the windows do not make it 'look' like a camper and i keep my 'stealth van' identity.
be mindfull that this is great for short trips away but considering it's size, toilet facilities need some thought!
based on my experience, don't get the standard 1.9D engine.
it is a little underpowered where hills are involved!