Secondly, you have put major pressure on selling your home. The seller of the home you are buying will demand a 24 hour clause, which will definitely come into play because if you like the home, someone else will (you may lose the home of your dreams). If this does happen, you will still be under pressure to sell fast, which makes a difference in how much you sell the home for compared to being patient.
The best way is to sell your home for maximum value is to have a possession date of 90 days to allow plenty of time to find the right home for you. This also puts you in the position to negotiate the best deal.
What if you find your dream home before you sell?
Talk to your mortgage lender about bridge financing. This is when your lender (the bank) is confident your current home will sell quickly and they agree to lend you the down payment for your new home.