Buying my first home

I offered to buy a house in a HCOL area in NJ. My offer was 10% over ask on a house that hasn’t been renovated at all by sellers the past 11 years. Based on what I saw, I didn’t mind paying over ask to get the house. There were multiple over ask offers on the house and mine was the highest by a smidgen the seller’s agent said.

Upon inspection, the deck is a major issue structurally. The deck ledger board is installed onto a cantilever house extension that’s not structurally rated for deck load. Estimated cost to fix is $16k.

Then another issue arose with home insurance. Because the roof is 16-20 years old and end of life, no insurance will insure the house, including the seller’s insurance. Seller’s insurance said owners are grandfathered in but house is not insurable as new based on updated Underwriting policies.

We brought the two issues to the seller’s agent and attorney and just heard back. Seller’s willing to replace the roof but will not give anything for the deck. Personally I don’t think this is fair especially when we are paying more than $100k over ask but this is my first home and I want to be reasonable. My agent left it open to me and said if I’m amenable to this then we proceed but if I’m not, I have cause to cancel the deal and continue my search.

This certainly is not a dream home by any means but it’s a good enough home and I need a house to settle into before kids start school in the fall. Housing market hasn’t been great in the area and there have been so few homes in my price range so I’m torn. I would be so grateful for any and all advice. What would you do?? Thank you.