You do not want one trust for all your assets and business interests. One of the benefits of having a trust, is deferred liability.
I suggest a family trust - where you put your personal home and assets that are fully paid (cars, house content, etc.). This trust's purpose is to provide for your family, even when you pass away. The advantages are that there is no assets in your personal estate when you die (less tax implications, no assets or bank accounts will be frozen, your family can continue with their lives).
Then you need at least one more trust, in which you do your business and investments. By having a separate trust here, you mitigate the risk of losing your house & car or personal assets if business went sour.
Note that moving property, such as your personal home, into a trust carries the same conveyancing fees as if buying a new property.
Each trust needs at least one independent trustee. This is someone who does not benefit from the trust, who will ensure the trust continues running when the main trustees pass away and will facilitate the process of appointing new trustees (i.e. your kids).
I suggest you talk to an expert about the legalities, fees, tax implications and how your cash flow will work between your natural person and entities.
Hope this makes helps