Even lighting setup

I am trying to produce an even lighting setup with no hotspots or deep shadows, but not sure what the intensity values or angles need to be. I can’t quite get this right and I can’t seem to find anything on this. The model needs to be illuminated from all angles evenly. I have Unity Pro.

Have you tried Ambient Lightning in Render Setting ???
Edit > Render Settings.

or what about applying Self Illuminating Shader ? click Here