I was wondering if you had a network hub, kinda sounded like might. With a network hub you can put them wherever you want and what works best for you. Once you have everything networked you can select to view what ever you want on whatever screen you want to see it on.

If you have more than one transducer I'd try to make a name for it so you know which is which.

I have a GT 56 on the stern and a GT 54 on the front that is bulit into the Garmin Force so I can tell which is which with two GT 54s it might get confusing.

Sounds like your going to have a nice set up when you get it hooked up the way you want.