The real estate market can change quickly as we've seen this past year. You don't want to be in the position of buying a new home without have sold your current property. Depending upon your home, market conditions, demand, it could take months for a home to sell if the market stalls.
Your best solution is to hire the right agent to coordinate the sale and purchase of a new home. If necessary, placing your things in storage is an option and renting until you find the right home at the right price in the right neighborhood. The purchase of a home is a long term investment that requires the best advice from a qualified agent.