Build a 7" Freestyle Quad - Part 6: Betaflight Setup for Beginners 

Hi, thanks for taking the time to ask a question. You can absolutely use this flight controller without a GPS, I have it on several quads without. GPS is only ever needed for automatic navigation modes/rescue modes. The FC will also work 100% perfectly without any video system. To fly LOS, a flight controller only needs to have a standard IMU (accelerometer/gyro), and all flight controllers have those. I have almost zero LOS experience with quads, but if you're just starting LOS, I'd suggest using an autolevel mode (angle or horizon) and looking into 'head free" or "headless" modes in Betaflight (if that is what you'll use). As you get comfortable, you can make a switch to full acro if you want. If you've never seen, QuadMovr (www.youtube.com/@quadmovr/videos) has wicked LOS skills and quads. Good luck, flying LOS freestyle is a top end challenge.