Looking at the first below I'd say, to be on the safe side, the bedhead should show half to three quarters above your tallest pillow. The second photo I believe shows too much bedhead.

with a lot of helpers crowding around to help i suggest that the new kitchen needs to be zoned for tasks and be open plan without a separate pantry...this rough idea has a central island about 2m x 3m surrounding the column and walkways approx 1.5 m between counters, subject to available space with the column the island has mostly underbench drawers for pantry food storage, crockery and cutlery and the counter is for food preparation, serving, sorting and distributing clean and dirty cookware and bags of groceries etc and has a small extra sink but no more than a couple of stools to keep the workers moving!!..Subject to suitable access the central space under the big island (would be about 60cms wide, 90cm tall and almost 3m long!) would be ideal to store folding tables and chairs and "christmas" supplie in wheeled storage crates or pull out kitchen island trolley..There's a full size fridge and freezer as well as an underbench drawer fridge next to the tea, coffee & toast area,with cup glasses and breakfast supplies in the overhead cabinets..twin dishwashers with double sinks, hot cold water dispensers, pull out garbage bins and a modern insinkerator or compost disposal in the sink area..the cooktop and food prep area is on both sides of the corner with big appliances underneath, and serving plates and casserole dishes etc overhead..The base cabinets should be deeper than normal for more generous counters and giant cooking equipment and appliances stored underneath and to have shallow splashback shelves for herbs,oils, sauces etc and there's a stacked wall oven and microwave and a stacked wall oven with warming drawer and vertical shelves above the ovens to stand up trays, racks, cake and pizza trays and drawers below the ovens for saucepans and baking dishes...decorative finishes and fine details need to be determined by the resident cook for personal taste and everyday comfort

I read it as 2400 or 2700 windows and doors, the ceiling was a typo.and should have read window. The ceilings are all 3m The 2.4 could work are you able to post any plans 2D & 3d to give us a better perspective, there's so much to consider with anew home

Just at a glance , if you lower the floor joists ( which would be a big and expensive job in itself ) the downstairs would be too low ? I don't know the rules , nor how big your place is , but you may have to take out the stairs and not use upstairs ; or put walls or cupboards along the side walls to get to the 60% 'rule' ; maybe use it only as an office ? Another option may be to put wheels on your house , and claim it is a tiny house -- don't laugh , often councils are that tied up in their own rules they will have to allow it , as it will completely confuse them !