Created this in 3ds Max. Divided the entire model into 6 different UVs. The box at the front was modelled separately in ZBrush. Rest of the model (including high poly) was done in 3DS Max. The entire model consists of 500+ objects ranging from small to large in size. Baking and Texturing is done in Substance painter. That was a big challenge. Just to get the correct baking I had to play a lot with the bake setting in substance painter. Overall it was a very good experience. I learned how to handle complex objects. Hope you all like it.
Cheers