I hear you and completely agree.
I would only be running it near that max for 2-3 minutes at a time, once or twice per camping day (not many times yearly). Really I just need to know if I can safely go from the anderson plug on the battery to a busbar to inverter and pull 175a at the intervals listed above. And if so, what size wire to go from battery to busbar and busbar to inverter.
My thought is to create an anderson cable with the highest gauge it can handle ( I believe sb175 gray is 1/0). Run that to busbar and then run same gauge to inverter? Any thoughts on that?