Looks like a good little rig!
Could turn the van into some decent usable space too. It could be the guest house/ master suite if it gets too cramped.I guess you are used to sleeping in tight quarters but my bed is bigger I bet. And you are going to have a galley as well? You don’t plan on having any visitors either do ya. hahaha. I do hope it works for you UK. I’m just afraid you might be expecting more out of your space than can be accommodated. You know, eyes bigger than stomach kind of thing.