Here is what I have:

17ft Aluminium bass boat with 50 HP Evinrude.

This is what I want/need to wi

Trolling motor 12V
Nav lights front and rear
bilge pump
live well aerator
Electric start
Horn

Would like to run dual batteries. Trolling motor to deep cycle and every
thin else to starting battery. I have priced an onboard battery charger at
Cabelas that will charge both batteries. Is all this necessary?

Should I run large gauge wires from battery to fuse panel in console and run
all circuits from here??

Thanks