Your MAO is your MAO, and that is final. Don't ever offer more then the numbers allow.
Search the average days on market in your area and after that period has passed contact him to see if he would reconsider your offer. If he is still being stubborn, contact him again- either every two weeks or every month following this initial contact, depending on your level of comfort.
one of three things will happen in this time period:
1). Somebody will make him a better offer in which case you lose nothing because you have no money at stake.
2). he will take his home off the market in which case you also have lost nothing
3). He will fold and accept your offer in which case You win!
Remember, this is a numbers game, you need to contact many people many times
You may get a deal and you may not. Remember the worst he can say is no. You miss 100 percent of the shots that you don't take.
If you have any more questions or concerns feel free to connect with me.