[CA] [CA11] Axiom 7 SeatalkNG vs SeatalkHS?

[SVSunDog]

Hi,
My 30' sailboat has a ST4000 autopilot and three instruments.

I bought the EV-100 AP to replace the ST4000 AP.

I plan on buying the Axiom 7 with Navionics maps, display only, no transducer.

I'm confused after looking at a suppliers website.
They list an Axiom 7 DV with SeatalkNG.
They list the Axiom 7 w/ Navionics maps, display only with SeatalkHS.

I thought all the Axiom 7s were the same, you chose what map options and transducer options you wanted.
Am I wrong and I have to choose an Axiom 7 with either STNG or STHS?

For instruments I don't have the ST #s but here is what I found on the back of the displays.
Depth Z134
Wind Z094
Speed Z133

I plan on using the ITc5 to connect them to the Axiom 7. Is this correct?