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Ducted Heatpump system

Hi We have a 6 month old house and have decided we would like a ducted heat pump system put in. Heating and cooling. House is 4 bedroom so would want a vent in each bedroom and 1 maybe to in the dining / lounge area. I have attached a picture of our house plan for you to look at. We have plenty of roof space. You can stand in the roof . Would be nice if we could control individual rooms but not a must. all depends on budget. But you are the experts you suggest a set up .