With the budget constraints, you are very limited, especially when talking about such long runs...in short, go with Monster or AudioQuest. If you could add a sub, a used Velodyne or Paradigm would be my suggestion. It doesn't sound like you can spend a lot overall, so Paradigm makes the most sense...plus, they do make quality products, and for a middle aged gentleman with hearing loss (I wear my ear plugs at the firing range), spending thousands is kinda silly.
Good luck.
Good luck.