Welcome to the madness!! My wifes family is from Halifax!
Replace the whole steering this way you know what you have, and as said it is cheaper that way. Go NFB unless you have $$$ for Hydraulic.
Fish Finder was installed by one of the last owners.
My boat was from the 70"s and had no pumps so I am no help there. and I also don't pulll anything but fish lines so ski wil have to come from another.
Good Luck
O Yea