Help on a scan setup for 1.5mx2m

Hey Guys,
i want to build a setup to scan grass on a field. There will be wind so the grass will be moving. I need a 3D model of 1.5mx2m Area. I am a beginner in that field and would need some help on how to build such a rig.

How many cameras in what distance (should be close, i want a small and movable rig) and lense do i need to archive that?
What would be a good camera for that?
I think about ILX-LR1, but i fear the focus with the big sensor.
Lighting… what flashes to use for outside scanning in full sunlight AND nighttime.

I would love to learn how to do a propper setup, any advice would be great.