[CA] Instrument Upgrade

I have an a75 MFD without sonar, and I'm looking to upgrade my sonar and wind instruments. I'm looking at the i70 display with wind, depth, and temp transducers. Will this talk to the a75 with Seatalk, or do I need the wind and depth control heads? I also have EV100 wheel pilot with ST70 control head that is connected to the a75.

Thanks,
Mike