You need to draw the room to scale and mark the door and robe. Then make little paper models of your stuff and move them around. You'll soon have your answer.

. Its just way too much timber! So the floor should stay, because its harder to change. Start by definitely at least pull out the part of the kitchen with the weird enclosed fridge space. that really cramps the room. Then pull of and replace the cabinet doors and the laminate bench top. pick some amazing tiles and have your husband work his magic! Paint the walls a nice colour to really make the space look more vibrant. Get rid of those horrible blinds completely! We are doing out kitchen up and we don't have much money or skills or access to tradespersons anyway. So we are keeping it to a minimum. Do it little by little. We started with a new stove with really changed the feel of the room. We plan to just paint the cabinets.

Assuming north is what you're indicating it's really poor planning putting a garage hard to the boundary on the north side and the majority of bedrooms on the south. Are you sure this is correct as typically north is up the page as drawn. If so the whole thing needs to be flipped/mirrored. Also there's arguably a significant amount of passage space in the house plan for what it is, not to mention a lot of unusable external space to the sides of the house. An alternative and more efficient design/floor plan would utilise the available space better for you and give you more flexibility with what you're trying to achieve....You're possibly pushing the envelope for what you're wanting on a single level for this particular proportion block of land. There would be a 2 storey option, (say with Master Bedroom on upper) which would achieve a double garage and all the other requirements, but appreciate it's always about practical cost limits. 6m to the back fence from the alfresco is not huge for a family home but depends upon your lifestyle. I'd be considering reducing the building footprint and really the only way to do that for a house this size is to consider a 2 storey format

the narrowest walking space would be about 60cms (and there won't be a lot of traffic in the space and with 3800 (not 3400) the ens doorway can be pushed towards the front of the house, not centred and makes more standing room in front of the shower and easier access from the bedroom to the ens but also depends on the distance from the new wall to the side of the bay opening and that was probably centred when the house was built and before the wardrobe was installed so you need to carefully measure the room again... we now have three different widths for the room and the hall is shown as metres wide!!...is the master bedroom 3400 or 3800 or 4460 wide (ignoring the bay window) and what is the length of the whole room (ignoring the wardrobe) and what is the depth of the wardrobe from the outside and also measure from the outside of the architrave around the bedroom door to the front of the wardrobe ..could you gain some space by moving the bedroom door closer to the wardrobe and/or hinging the door to open towards the wardrobe to feel less cramped? ...we can make lots of suggestions but need to start with precise information about what you already have and based on new information and the size of an average king sized bed and the wider room my suggestion would be to place the bed in the centre of the room, lined up with the centre of the bay window and then measure how much space is available on either side for the ens and for wardrobe and bedroom door and you'll probably find that even if the bedroom door is moved there would probably be about 60-70cms between the bed and the new wall and minimal space between the bed and the door on the other side so try losing big bedside tables and use hanging lamps and mismatched side table or shelves ( a cut down stool makes a tiny side table) and keep in mind that, unless you remove the whole chimney (big job but will supply a huge number of bricks if you need some paving) the thickness of the brick walls will decide how much space is available in the chimney alcove for the vanity so measure inside the chimney not outside wall spaces but, despite limitations imo the ens is well worth the effort, cost for the improved resale value and quality of family life.. but, why not move the bed and add something to create a barrier to represent the proposed ens wall and see how it feels as something like this could work but depends on accurate measurements