Just open the default template map - select the lights and set them to dynamic (then you dont need to bake the lightmaps). Now just drag and drop the mesh into the level (before that, just import it) and start playing it in VR-mode.
Now when you dont want to have shadows, just select the light again and disable “cast shadow” (just some few
Or you could view your mesh in the “unlit” mode -> during gameplay: https://forums.unrealengine/showthread.php?62962-Unlit-level 
Otherwise you could also directly view the mesh in your 3d tool (depending on which you are using, it should be possible to do that in VR)