Wireless go is TRS in and out: https://www.rode.com/wirelessgo

So TRS to answer your question

Yup, a TRS (or an adapter from TRRS to TRS).

You will need RØDE SC7 TRS zu TRRS Kabel CHF 18.20
RØDE SC7 TRS zu TRRS Kabel

No, the transmitter has a built-in microphone