I'll take the time to read the manual if you take the time to read my post

I know you are just trying to help but I get that wifi and 2.4ghz radios are not supposed to play together but in practice they can coexist just fine in some cases. I am not an electrical engineer but the frequency hopping is sophisticated enough or the wavelengths don't completely overlap.
If you look at the link for the shutter it allows you to control the shutter and mode of the gopro with the transmitter so in theory you should be able to do photo on demand.
Still trying to find out if it is possible to do FPV while in still photo mode? Does the usb port still output analog video? I had read that it does not output video while in photo mode but need confirmation.