I am planning to construct a window out of an empty wall to get more natural light into the house and to get a view to the outside. The window is at the first floor. I don't need to open the window as there are other opening for ventilation.

My contractor suggests to use tempered glass for the window, then build awning with roof tiles and metal frame outside to reduce glare from the sun (window is facing north) and cover it from rainwater. Please give opinion for this type of design. The materials suggested is OK? I wonder if wooden frame is better. What if it is without awning.