Build a kitchenette under the existing deck. Enclose the top half and make it part of the dining room. Build a deck and a patio area with a 75mm SolarSpan roof attached to the same side of the house. Concrete the whole area and tile the front entrance areas of the house. Use the same profile of FC cladding to match the old part of the house. This brings uniformity and, in the end, makes the building look as one and not an add-on.