Thanks for such a quick and high quality reply and thanks for the specs and recommendations while RW2 is under construction.
Near term I'm making models while gaining proficiency with Unity and Blender and eventually learning the API as RW2 gets more complete.
I was planning on making mods using the API to sell BUT after reading forum comments I agree they should be free.
I'd love to work with others to make mods and things for RW2 and have fun testing.