electronics setup

[Mr. Wizard]

Trying to figure out how to set up the electronics on a new 1650 fishhawk. I spend all my time in the bow and 70% without electronics casting for bass. Walleye time is split between trolling with the minnkota and anchored. I'm looking at putting a Lowrance Elite 5 DSI with a chip on the counsole and then my lowrance x67c I use for ice fishing in the bow with the puck transducer on the trolling motor. How often will I want the GPS running in the bow? Do I need the DSI on the console? Cost is a factor but I want to have what I need. Appreciate the input

[Esox_Magnum]

I rely on my GPS more then my finder,I have both running GPS/graph anytime I'm on the water no matter what or how I'm fishing...