Hi there - a few things stand out to me... yes keep bedroom sizes no less than 3000mm wide, offset the door to the laundry so you can't see the toilet from the front door - yuk! Minimise/simplify number of piers by turning front porch 90º. Keep the footprint as simple as possible. With oklouise's plan, which i think makes more sense, cut 300mm into each of the bedrooms and push out towards the left into the deck. Much better use of space. If west is to the left put a whole wall of cupboards along in bed 1 and get rid of the others, and add door out to deck on the (new) north wall. Do you really need a bath? Living in country they are wasteful of water even if it goes back onto your land. Alternatively have a combined shower/bath? Babies and toddlers wash quite well in the laundry tub then learn to shower with you or on their own quite happily. I'd make the shower a big bigger (and the cupboard on the hall side) and get rid of the bath. Make sure you have excellent insulation in walls, ceiling and under floor. Consider hebel panels as flooring (also, the reinforced ones span great distances) and walls for both fire safety and insulation value. If possible look for ramp potential in case of disability and also for getting furniture into house. If you're in a fire zone make sure all windows and doors comply with your zone rating. And if you are building high up on piers make the external cladding is something that never needs painting and is minimal maintenance.

DB.....A LOT of ideas and advice flying around here.......skimming through I see you are endeavouring to establish a basic concept for a designer/architect to consolidate for you, which is great.......whilst you may think this is a logical approach to achieve the best outcome, you are arguably just throwing around random ideas rather than properly resolving/focusing on the critical aspects ........my advice is do this: firstly clearly ascertain two things on paper, not in plan or building format but in writing...that is 1. List all your requirements/needs/goals and 2. Nominate a budget. Next, identify/research a logical local designer/architect option and approach them with this information....A designer's job is to come up with an appropriate concept/solution that best balances your requirements, aligned with a budget and of course make it viable within context/site. Sure, you want a cost effective/modest result, that's fine, and that will influence the solution, but as a general comment it feels like there is massive potential being missed considering the site..it dens;t necessarily have to be that big or fancy, but you have to put the EXPERIENCE of the home front and centre of the process, and not just think of it as a kitchen or whatever laid out this way or that ....This is about an amazing site and the living experience of that and the design should be based on this and bring together your specific requirements elegantly balanced in context......The issue I have scrolling through all this is that you have all these almost disconnected ideas of building form, but you have this incredible site....... the process of resolving the spaces ideally needs to develop from cues of the immediate environment/site in order to make the most of it since you are pursuing a customised solution.....agree with MB, every project has a budget and ultimately from experience this is in general the ultimate/overriding constraint. This project could be anything upwards from $500K and it will come down to the working out how far you want to take it, and what your priorities are over various levels.......this one has seriously significant potential -make sure you make the most of it as you're truly fortunately to have this opportunity to build a home for you and your family to enjoy there.......best of luck :) PD

Dr Retro's analogy with a convertible are so true. We elected to wait 12months in our recent house purchase before embarking on major renovations. The magnificent view that we thought we needed to have stacker/bifold doors for turned out to be too breezy to have the doors open for more than a few days a year. So the extra wide mullions associated with this kind of door would be impacting the view for 99% of the time. In the end we went for extra wide sliding doors (3 for a 4.6m width) with the narrowest mullions we could find. As for your quandary re the corner post, how about a very small section solid stainless steel post? Along the lines of Miles van der Roh's Barcelona Pavilion?

Wow there are so many angles on the rooves (roofs?)... I don't know the right or best option but I imagine the deck being curved, to create some interest. I want bug chunky timbers in dark stain like recycled wharf beams or railway sleepers. I think start by removing the little roof over the porch and opening it up flush with the brick wall of the front door. Then install chunky beams (wood or steel) that fly quite high and straight over the void between the 2 sides of the house. I would use a polycarbonate roof in that area to let extra light through and not make the house entrance too dark. The area behind the carport where the deck is level with the rear of house, I would have a solid roof that matching the pitch of the back of the house, or even not have a roof at all. I would leave the entry deck area and the curve unprotected. My only question is this... is this an area you would hang out seeing its quite disconnected from the living areas? perhaps having a more ramp like entrance with interesting trees in the void area and making a matching deck on the other side might work. I just feel if its only going to be an entrance its a big capital investment and an expensive exercise with all the roofing.