It took a long time to ship to US. So I advise to not cheap out of the shipping like I did. I would rate this project Medium to Hard. Due to the unique soldering angles. I was able to learn a lot about soldering and of course ESP32 wifi Dev boards and Marauder firmware. I used the FZ_Marauder_Flasher flawlessly. I plan to see if esp flasher will also work for dual boot.
Very easy to install. The provided instructions include photos of all the key steps in soldering the board. The composite video and audio quality is much better than the original RF output so this was a much needed upgrade. Fast shipping. A+