Baking lights in 3ds Max with Vray - Metallic Reflections & Seperate Lightmap

I have a large architectural model with around 2000 IES lights in 3ds Max, I am able to bake the lights using iray in 3ds Max and send the whole thing to Unity. However, I am used to using Substance Designer and have been spoiled with proper Unity shader maps (texture reflections and bump mapping). I was wondering about the ideal process for baking multiple maps in Vray and bringing them into Unity beyond just baking "VrayCompleteMap"? Is there a secret shader out there that works very well with the types of maps that Vray can create?