To be the hub (the effective centre of an activity, region, or network) of the house, other areas need to radiate from the kitchen. The kitchen does not need to be huge or elaborate, but does need to be open to the living space, dining space and other nooks.
Looking around houses at open homes is a great way to identify the feeling of the suburb and house. Each suburb and house has a different vibration. The ideal house will be one that resonates with you. Moving into someone else's home generally requires some manipulation of the layout so that the overall feel resonates with you. Renovating a house will also change your own vibration a little, as a second hand house will not always be your ideal home. Have you considered your own story and how your home relates to this?
Having a budget in mind and a plan to work from make building less stressful (provided you can stick to it) when creating your dream home. Preparation before hand takes the rash rushed emotional decision making out of the equation. the end result is more likely to be something you are really happy with as you have made decisions that are aligned with your true self rather than you inner emotional child. Take a pause to read.