I have three Yongnuo YN560 111 speedlite flashes and use them on manual setting for high speed water drop photography. I also have a Yongnuo YN600 EX-RT 11 speedlite flash which is TTL with my EOS 90D. However I want to use it on manual together with the other three but don't know if it will sync exactly when using a remote trigger. Anyone know for sure? Or do I have to try? Just trying to save time.