A plan for 3 years

Now, I am in the midst of getting ready to move to my new house. So all my daily activities recently have something to do with this move. The plan is to move in at the end of October this year and live there until Dec 2012. My spouse and I bought the place 5 years ago but only received the keys from the developer mid 2009. After looking through the 2.5 storeys intermediate terrace house, we conclude that we do not need this much space for just the two of us so we decide to sell it in 3 years time when the housing market should have recovered. I feel fortunate that my spouse have taken a break from work since early this year so that we can jointly participate 100% in this event. Would we stick to the plan? Would we decide not to sell the house when the 3 years are up? Only time can tell.