Truck dilemma

I recently purchased a 2011 ford super duty truck. It has a 6.7 diesel with 192k miles. I bought this truck for a farm truck not an everyday driver. It looked nice and seemed to run excellent, I thought it would meet my needs. After getting it I spent $960 having a gooseneck hitch installed. I also spent around $800 fixing minor issues I found. But I found one major issue, an upper oil pan leak.   This was a big job requiring the transmission to be dropped, to much for me. I found a guy to fix it for $2500. He found a few other issues so it ended up costing about $4000. He also found another problem he did not fix. Metal shavings in the fuel filters. He says the entire fuel system needs replacing. If not, there will be catastrophic engine failure. He explained to me that fords have a poorly designed fuel injection pump that wears out and contaminates the fuel system. A common problem with fords. So I’m at a crossroads with this truck. I’ve already got more in it than it’s worth. I could try to sell it as is and lose thousands I’ve invested and have no truck. Or I can spend more and fix it. It’s probably going to take close to $10,000 to replace the fuel system. Naturally I wish I never bought this truck but I can’t do anything about that now.