[CA] [CA11] Advice on electronics upgrade (new MFD + Radar from C90W)

[Teodoro]

On my 2010 Sun Odyssey 36i - used for cruising / sailing - I have an all-Raymarine set of electronics coming from a couple of generations ago: C90W MFD inside, SPX pilot, ST70 tridata + pilot control - all mounted on a Seatalk NG network.

The only thing I've added over time is AIS receiver, via a Standard Horizon integrated VHF, connected to the MFD via NMEA 0183.

I'd like now to add an external MFD in the cockpit, and possibly a radar. I have a few questions if possible:
- what is the recommended MFD series for my setup? Opening Raymarine website I find several different series all current (Axiom, Axiom Pro, ES, GS, etc) but not clear what would be the best one
- are there compatibility issues with the rest of my equipment? Particularly around the AIS connected to the C90W... would I see AIS data on both MFDs? Or would you recommend connecting it in a different way?
- would the radar (quantum or QUantum 2) be visible from both MFD or only from one?
- do I need additional cables in the cockpit for the new MFD or can I connect it via SeaTalkNG from the signal arriving to one of the ST70? (I have an hub in the pedestal)

Thanks in advance for the support
Teo