GS165 and eS98 network

[Firewood]

Spring is around the corner and its time to sort out this upgrade.

My New equipment that was purchased this winter s
GS165
A78 with CPT-100 Transom Mount
RMK-9 remote
EV-200 Evolution Autopilot with display screen

I have a dsm300 and p66 installed, I'm thinking of keeping this going
just for more depth capability over the cpt-100, will they interfere with each other?
When the cpt-100 loses the bottom due to say 1,000 foot drop off, will the the display still continue to show sonar readings of fish and bait in shallower depths? or will it stop plotting sonar info because its lost bottom ?

The A78 will provide my GS165 with GPS info.

I also need to link this up with my Verados and the two smartcraft gauges
for speed and fuel burn.

As of this moment I'm going to stick with my old Raydome Radar.
Would the old Radar and DSM300 need to be on a separate network adapter from the Autopilot?