Learning and upgrading my system

[Tranquility Bay]

Recently picked up a 1999 4788 Bayliner that has a combination of new and original Raytheon/Raymarine components that I am attempting to learn, sort out and add to. So I am looking for some advice on what I may need. The best I can tell the new stuff is not interfaced with the old. The components are,

New
Axiom 9RV-9" MFD 3D + 600w (mounted in pilothouse)
Quantum 18" Q24W (wifi model) w/ Pwr Cbl

Old
Raypilot650 - Works manually but not connected to MFD (mounted in pilothouse)
Raypilot 65 remote - Does not work.
Raydata - does not work looking for suitable replacement (mounted on flybridge)
Ray210VHF works (mounted in pilothouse). Flybridge has a different brand.

There are also what appears to be 2 possible GPS antennas on the arch. One is a D-Beacon RX unit I assume may no longer be active. The other looks similar but has a metal antenna on top. GPS works so I assume its connected to one of these.

Based on this, what can be used and interfaced with the new stuff and what do I need?
What should be replaced and with what?
What is a good AIS to add?