The software I chose to build the model was sketchup. It is an underestimated 3d software because its potential is huge. But mostly, I chose this because of Speed.
Sketchup is by far the fastest 3d modeling tool you can find. Of course it has some limits because of its simplicity but you can finish the model in 3DS Max for the most organic shapes.
For this model, because I didn’t have much time I did only the front facades of the building and this proved to be bad when I was picking the camera because I was conditioned to this. Still the idea was to have a front facing camera to the building and for that, was good enough!