Looks very good and seems to use higher end components (fridge, roof, bed, etc.). It looks to be a bit tight on storage though - one reason being the wider RIB comes at the expense of narrower cabinets. Also, with the permanently open sink with tap sticking up you lose kitchen work surface when compared to, say, SMEV units with fold down lids and taps. I don't think there is such a thing as the perfect conversion and some things have to be a compromise, e.g. wider bed=less storage.
The diesel hob/heater looks good (see recent thread discussing) but would not work for me as I'd still have to carry gas to enable cooking outside (which is my preference to keep cooking smells out of the van).
I'd also want to know why a pre-registered, low mileage, 2016 van has only just come to market (could simply be that he bought a job lot and is only just getting round to converting them?).