I'm not here to argue, but an approved plan can be resubmitted as a variation for approval. The blind acceptance of an approval limits your creativity, and the clients ability to obtain the best possible solution. This problem requires thinking outside the box which is what we have offered. The client must decide if the process and cost of approval of a variation is worthwhile. They shouldn't live there wondering if only we had done this or done that due to a blind acceptance that once approved there can be no variations. Realistically everything that has been suggested should result in the need to seek an approval especially when changes to plumbing are considered. Erase what you are not happy with and redesign that space without the shackles of poor space planning. You don't have to like my suggestion but don't limit yourself either.

yazrav wanted the ens next to the central courtyard with outdoor shower for access to the hot tub for communal use, swopping the kitchen and pantry was to create more space for the bigger island for family crowds, add some privacy to the courtyard and reduce the south western glass...the dining table in my plan is 3m long and the extra small room off the master suite makes an ideal nursery with space for biw, large cot, nursing chair and change table and in the big study i've added a wall to wall 75m deep desk and overhead wall to wall shelves with space under the desk for drawers, storing bean bags and there's office chairs and full height wall to wall bookshelves at the other end

Wall-mounted AC units have a directional outlet on them, so you'll be able to set it to push air across the room. 7.5 metres is a long way for it to travel though, probably won't go that far. The fans are not that powerful. As for the output size, the rule of thumb for these things is 100W per square metre, so 5kW is about right. With 7kW you should be okay. However your desk is right by a north-facing window so that's where the sun will come in and cook you, unless there's some shading. The suggestion for a fan is a valid one, and will probably make a big difference. I'm not sure is position 2 would really be a lot better since it's directed at the stair void anyway. Thermal comfort is always a tricky one since it's very subjective. Ultimately you'll just have to try it and see whether you feel too hot or cold. But overall I think it won't make too much difference which of the two locations the AC unit is in.

All - Thank you so much for your suggestions. Very helpful! Oklouise – Thanks for your suggestions. I like what you’ve done. I had not thought of the the off-centre solid wall suggestion in the tv room. This will make the space more functional. Very helpful. Thanks. Siriuskey – your design was similar to oklouise’s, so again many thanks for this. I like what you did with the entry area so will see if I can make this work given the dimensions of the house. BTW - the house is brick but I am thinking of partly limewashing/whitewashing it - but this is a very low priority item right now. Dr Retro – thanks for your comments. Appreciated. Yes, I'll check the sizing of furniture etc. Kate – thanks for your question re: wall at the end of the dining area. I’d like to create an attractive focal point from the kitchen to the garage wall, rather than just have an off-centre garage door (i.e. going for a look more like the below). I’d also like more storage so I added the partition wall, which could also have cupboards on the garage side. But your vestibule idea could work too. I will look into that while taking into account the other ideas from houzzers here too. All very helpful. Thank you. Dreamer – thanks for your suggestions as well. These give me food for thought so need to ponder more. I’m not sure there will be enough space for a fridge and an island but will draw it up and see. Just to give you more info here, not essential, but I would have liked to be able to have another tv (hidden in a wall-mounted cabinet) on the existing east-west wall that divides the kitchen-tv-formal zones now where the tv faces the kitchen so I can watch the news while cooking. I have looked at adding storage to the entry area as I think the house needs more storage so I will look at this some more again. Thanks again. Really appreciate you taking the time to get back to me on this. Cheers. Thanks again everyone. Cheers.