E380 Networking Navigation Upgrade

My boat came with mixture of older Raymarine ST60+ Wind, Speed, and Depth instruments at the helm networked via Raymarine SeaTalk to the C80 MFD chartploteer and the SPX 10 autopilot as well as an original B&G Multi Data instrument display at the nav desk that was no longer networked. A new Raymarine p70 auto pilot had been added and networked to the SPX 10 using a SeaTalkNG (NMEA 2000) cable. The boat also had an old basic VHF radio at the nav desk without a DSC and a recently installed...