Ajuda! Redesign clássico da casa dos anos 50

The proposed design has two variants for roof construction - with new gable roof (variant A) or the existing 4-sloped roof (variant B). That changes some parts of the ceiling of the living room. Another plan difference is the entrance to the master bedroom - through the existing door to the former garage or through a new door.
  The (optional) entrance cover has 3 variants (v.1; v2. ;v.3). The client is free to choose whichever they like or whichever be approved by the local authorities, regardless of the main roof variants.
   The furnace vent, which is part of the existing wall structure, is preserved in order to minimize the demolition work and damages over the existing wall, as the area it occupies is insignificant (not critical).
   Materials and color combinations (which may vary) are approximate. The main focus of this project is the planning and overall design.