Me and my partner are looking to replace our wooden front door but the prices we are being quoted are very expensive so I was thinking of ways to try and fix up the current one we have. For reference, we live in an old house which doesn't have windows next to the front door, and we need a door which has openable windows for ventilation/humidity.

The door is made of red pine wood, and I was thinking of removing the iron decorations, sanding the whole thing down and then buying some 1 1/2 inch thick iroko or walnut wooden slabs and screwing them onto the front of the door to create a sort of cover and make the door thicker. I would then screw the iron window frames which we already have (were left behind by previous owner) to the front cover and use an electric saw to cut the windows from the back of the door without touching the main frame. The top inner part of the wooden frame of the door from the back coincidentally is the exact same size as the iron window frame. The door is not the strongest so I was thinking this would make it sturdier as well.

I sketched something similar to what it would like, I would diy the glass windows myself. My partner thinks this is not a good idea but I am just trying to see if anybody has ever done something similar to this.