Caravan and Van interior design

We are a family of four (2 adults and 2 young children) planning to travel around the UK and Europe for extended periods. We are looking for an experienced 3D designer who can help us design a practical, modern interior for both a large twin-axle touring caravan and a support van.
We have already experimented with AI-generated designs, but they don't understand real-world dimensions. We need someone who can create concepts that are both attractive and realistically achievable within the available space.
Van (Peugeot Boxer / Fiat Ducato / Citroën Relay size)
The van is not our living space. It will act as our dressing room, wardrobe, storage area and mobile office.
The layout should include:
Two front cab seats.
Two fully seat-belted rear travel seats positioned directly behind the driver and passenger for our two children.
A large wardrobe/storage area for all clothing, shoes and personal belongings.
A comfortable area to get changed and ready each day.
A dedicated workspace for two adults with a desk suitable for trading and working remotely.
Provision for laptops with clip-on portable monitors.
Plenty of practical storage for everyday items.
The interior should feel bright, spacious and modern, using light oak, beige, cream and other neutral colours to maximise the feeling of space.
Caravan (Large Twin Axle)
The caravan will be our main living space.
We would like the design to include:
A fixed double bed positioned across the rear of the caravan, filling the rear wall, with the headboard against the back wall.
Sleeping accommodation for two young children (creative bunk bed solutions welcomed).
A shower and toilet (or toilet with alternative layout if you feel it creates a significantly better design—happy to see suggestions).
A modern kitchen with:
2-burner hob
Tall fridge/freezer
Microwave
Air fryer storage (this will be used instead of a traditional oven)
Kettle
Toaster
Plenty of cupboard storage
A large, extremely comfortable L-shaped sofa.
Large TV mounted opposite the seating area.
Modern, clean, Scandinavian-inspired interior with soft neutral colours and quality lighting.
What we're looking for
At this stage we are not looking for technical construction drawings.
We simply want someone to produce realistic 3D concepts and floor plans that help us visualise the layout before moving on to detailed CAD drawings later.
If you have experience designing campervans, caravans, motorhomes, tiny homes or compact living spaces, we'd love to see examples of your previous work.