So in hind sight, here is my final itinerary suggestion.
The 7 Day Itinerary
Day 1
Assuming this is the day you arrive, you may not have the full day for sightseeing. So keep the plan for this day flexible. You can stroll around Marina Bay Sands. Have lunch or an evening beer at a riverside bar at Clarke Quay. You may also consider taking a ride on the Hop And spend the night window shopping around the neon lights of Orchard Street. You can...