Oh MAN!!! I would LOVE to do this on my 2008 Southport!!! LOVE THIS!!!
Could you possibly give a HIGH level of how the connections are made ?? Are there single large gauge positive / negatives brought to the new switches assembly to power them all ? and then the existing load runs terminate on a pole of each new switch ??
Maybe you could message me with a ballpark on what a panel similar to this would be ? Understanding that I would not expect that ballpark figure to be written in stone