Heat 1/2 cup of the olive oil in a frying pan. Add the onions and garlic and saute for 15 minutes, stirring frequently. Remove them from the pan. Place the chicken, duck, pork and sausage in the frying pan and brown well on all sides. Remove from the pan and place in large casserole. To the casserole add the sauteed onions and garlic, tomatoes, green pepper, stock, salt, saffron and paprika. Cover and cook over low heat for 20 minutes. Heat the remaining 1/2 cup of olive oil in frying pan. Add the rice and brown lightly, stirring frequently. Add to the casserole, together with the beans, peas, cauliflower, shrimp and lobster. Cover. Bake at 350 degrees for 1 hour. Add more liquid in small amounts if casserole becomes too dry. Correct seasoning and serve.