How should I build my ground in Unreal Engine 4?

I'm making a small map for me to make a scene for me to mess around with and learn the basics of Unreal Engine 4. I know how to make models and how to texture them, import them, export them etc, but I am confused as to how I should make my floors or the ground for my virtual world?

Should I either…
1) Make tiles in blender and texture them as stone brick, then piece them together as a ground inside Unreal Engine?
2) Use the landscape tool inside Unreal Engine 4 and paint stone brick onto the …