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Because the CX sensor is smaller than the DX sensor of your D90, Nikon 1 series lenses like the VR10-30 and VR70-300 will not be compatible with "DX" or "FX" camera bodies. However, you can mount your current lens on the V3. The Nikon FT1 Mount Adapter allows you to use certain Nikkor F-mount lenses (designed for Nikon SLR and DSLR cameras) on all Nikon 1 mirrorless cameras.
Image quality wise, the much larger sensor of the A7r will have higher resolution and detail compared to the V3 and your D90.