1. City closest to your location should work fine. That is what I did.
2. Once the connections are successful in KStars running on Pi, and Pi is connected to home network, I run KStars on my windows PC. Create a profile, select remote INDI Web Manager, scan for INDI server. It automatically detects INDI running on Pi. Select Devices in the profile and connect. It works fine for me. Make sure your location/time settings are configured on Windows KStars as well. 

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