I'm honestly most curious about your solar setup. I am thinking about converting my car into a mini-camper with solar on the roof and a LiFePO battery with an inverter in the "boot" as you say over there. And a fridge would be a nice addition for comfort.
It would be ideal if another solar panel was added to the roof. However, that's a investment that I would make if I intended to keep the boat forever.
I think a having a fridge is a must for a boat or camper as it helps to preserve food and prevent waste between replenishment.
You should definitely go for the campervan for some great adventure:)
This would be more like a car I park and then pitch a tent.