You can use just the controller but to me flying like that is like flying blind since I'm use to flying FPV. My first flight was using the GitUp Git1 but there are
better cameras than it and cheaper like the Hawkeye Firefly 7s 4K.
Hawkeye Firefly 7S 4K 120 Degree 7mm Lens CMOS WIFI Real Time Playback Preview Camera
Ebay might have one cheaper but I did buy another 4K knockoff for $40 that was recommended and it didn't work, either the hdmi circuit is bad or the
wired connector is not working or wired right? The Git1 has a terrible menu system on it and I don't know if the Git2 is any better? The FireFly was
reviewed on YouTube and looked good for a cheap camera but you might get lucky and find a GoPro Hero 4 black/silver cheap on Ebay? Good Luck.