I don't know a whole lot about pre extising homes. But I sold for builders for 10yrs. I would contact a new realtor and have them do a market analysis for you. And see how long it shows that your house was on the market and how long it is taking other houses around you to sell. That way it will give you a better idea of a time frame of selling and moving. That agent SUCKS!!! Don't use him again. With the market the way it is he shold be up your butt. Here is STL the best time to sell is spring and before school starts. Otherwise it is a hit and miss. That is why I had to plan a Oct. wedding.