based on your original plans my suggestions include two alternate options for relocating the study and uses the old study for NW family room to brighten up the family/dining/kitchen and opens the laundry to the rear with optional extra powder room with easy external access from alfresco and garden..the kitchen is more spacious with a 3m x 1m island and the master suite has more generous ens with twin wiw, there's a more private area for the kids bedrooms and family bathroom with generous biw, extra storage and the recommended sized domestic media room could have raised floors for seating but you need to consider suitable extra furniture to make sure that every room has a purpose and/or consider reducing the size of the whole house eg unless guest are expected to be long staying family members maybe you could lose the extra bathroom, front lounge and some of the study lounge and potentially reduce the size and cost of the house by around 40 sqm (the size of a double garage) and/or consider a multi purpose building in the backyard to make use of all that extra space
Thank you so much for your willingness to help oklouise, really appreciated, you put so much time and effort to help me.
Few questions
Is there any reason for leaving more setback on the western side?
The family room is smaller compared to the overall size of the house; do you think it will be out of proportional?
In the original plan, our plan was to put clearstory window on the northern and southern side of the living room, to get the winter sun, the plan you suggested how the courtyard is going to help?
Will it be darker in the kitchen and dining, due to the lack of windows?
Definitely I am going to take your suggestions in finalising my plan.
Thanks again.