I did exactly the same research a week ago, and came to the same conclusions. For my part, I can add that I did some tests connecting a couple of wifi dongles, one with an unknown chipset and another with an RT3070 (Alfa Network AWUS036NH Luxury) that I use to "collect" passwords from nearby networks. The first dongle, the camera told me that I had connected to the USB port a device that it didn't recognize. The second dongle didn't give any warning, and the option to control the Wi-Fi parameters appeared in the Communications tab. I don't know if it is because my router uses OpenWrt or because I have it in WPA2/WPA3 double compatibility mode, or because it consumes too much as it is a high-power adapter, but at no time did it manage to connect to my wifi network. The camera can see all the nearby networks, the manual or automatic DHCP mode can be selected, the password type can be selected up to WPA2, but at least it didn't help me much. In the end I decided to order an EW-7711UTn for 9€, as I wanted to stay as close as possible to the original adapters avoiding those with antennas or SMA connectors, and it's still on the way. I just hope that the one I've ordered is a V1, because the V2 uses a different chipset, and has a different entry in the FCC.
Regarding the subject of video, supposedly this camera is capable of recording up to 240fps through FireWire with the ResearchIR program, in Windowed mode at 640x60, without compression. I am still waiting for the 6 to 9 pin adapter to arrive so I can use my cable combo and do some testing.