Hi, here is my suggestion:
Macau: one day in Taipa for Venetian and area around there, Rua do Cunha nearby the hotel. Macau Tower, if you save some time in Venetian and street of Rua do Cunha can be visited at night. The other to the old city center for St. Paulo Church Ruins.
Hong Kong: Get to Hong Kong after visit Macau's old city center at late afternoon. Stay one or two nights in Hong Kong. You can visit Big Buddha, Disneyland in one day; Ocean park, Peak Wax Museumn, Light Show in Avenue of Star in one day. If you want shopping, remove sometime to do it.