Any direct answer to your question would be irresponsible. You should retain a buyer's agent who will analyze the house, the location, the sales, other offerings, the seller, and other factors to determine a reasoned offer. The other half of this is not only presenting your offer to the seller, but selling your offer. That means presenting it with a market analysis and the rationale behind the offer, as well as demonstrating to the seller that you are qualified to buy the house and have a good chance to actually close. It goes way beyond "how much should I offer".
If you are qualified to make an offer and want proper representation, contact me via my website. I'm good at it.
Member, Worldwide ERC
Licensed Realtor NJ
Licensed Appraiser NJ & NY
Century 21 Joe Tekula Realtors
Agent of the Year 2008
Owner: Sands Appraisal Service, Inc.
Phone (direct): (973) 584-4235