How long did it take them to put up the Sydney Domestic Express Terminal when Virgin Blue and Impulse got going? A few months. All they need is a very basic terminal at Richmond with stands for 10 planes of A320 or 737-800 size. The current runway would allow flights to just about anywhere in Australia, and if you want International flights, the same planes could make it over to Kiwiland. No movements before 0600 or after 2130 ( I think some UK airports allow airlines access during curfew periods on some rare events, so the plane does not get turned away if it misses curfew by a few minutes).
A320s and 738s will make less noise than many of the Military planes that already operate at Richmond.