Need Advice on House Flip Deal

I have a house flip deal I'm looking at purchasing and they're asking $80,000  for a 3br 2ba 1601 sqft living area. The home needs about $20000 to $25000 in repairs. I had the realtor run some comps and the had a similar house sell in the same subdivision for $137,000 (88 PSFT) 1546 LA. I spoke to the realtor and they are doing a highest and best offer on Monday. I'm coming up with a offer around $73.621,I think it may go over asking price. I would like to get some advice on what would be you max offer on this deal.