Some time has passed since you initially posted your question. Are you still interested in purchasing property in McKeesport or the surrounding area? I live locally and personally invest in rental properties in the surrounding communities and would be happy to help you with any questions you may have about properties and the Allegheny County real estate market.
If you are able to purchase a home, It is a great time to buy. The interest rates are low and you have a lot of houses to chose from. The housing market is in a down cycle at the moment and if you purchase now when the market rebounds you will benefit from it. If you wait for the market to come back before you purchase you may just ask yourself, "why didn't I buy that house when it was ???? price" and end up paying a lot more for the house you could have bought now.
Hope this helps, Coni