What Offer Makes This A Deal?

Details: Property located in Texas Approximately 1.0 acre Built In 1992 Waterfront property Double-wide mobile home Single story Central air conditioning Fireplace Double-wide mobile home is 1792 sqft Deck 80 sqft Deck 48 sqft Storage Building 120 sqft 1992 3 total bedrooms 2 total full baths Living areas: 2 breakfast area/room family room w/ fireplace Carpet Tile flooring Vinyl flooring Central air conditioning Central heat Senior Community Composition roof Shingle roof Partially fenced Electric service available Septic sewer system Sold "as is" Estimated annual taxes: $1715 Current Tax appraisal is $77,495 Listing price is $66,000 Yard needs TLC, but will look nice after cleanup. Roof is original and needs to be replaced. Inside is in 'Good' to 'Great 'condition. Properity is located in a 'Good' mobile home and stick built subdivision. AC looks to be in good working order. Foundation sound. Overall exteror is good. Story I got from agent is this is the wife's house before they got married and the moved into his house and want to get rid of this one. She said that the listing price of 66K is the note payoff, but I don't know how valid that is. Properity has been on the market 12 days. This is my First possible deal, and I have been looking for over a year. I will be going on a week long vacation on Wednesday and I need your help. I want to make an offer on this tomorrow, but I don't know what to start at. I don't want to piss them off and end all the relationship, but I don't want to pay too much either. For reference, 1 acre with all the needed improvements for a DWMH is worth 30-35K in this area. Please Throw out your guesses as to what this place will go for!! BTW, I will be living in this house (or another)for 3 years until I pay it off and move into a different one. I will be renting it out right after I get house #2. Thanks Q