My hatchback isn't cutting it these days when I store 3/4 kites + board + foil.

Looking for recommendations on a car/van with:
- ample boot space
- good security/hard to break in
- fast enough on motorway
- reasonable ground clearance
- don't care about passengers (I'm single )

I was initially looking at Subaru Outback as they have a large boot and can sort of go on rough roads.

Or modify a Toyota Hiace?

Or?

Thanks