I have this upcoming outdoor photo shoot. I want to keep it simple. I've been tempted to pick up an SU-800 for TTL flash capabilities off shoe. I currently have two Yongnuo RF-603 wireless flash triggers which I initially bought so I could have a wireless shutter release. I don't want to fiddle too much during the shoot hence thinking about the SU-800, but the RF-603 triggers also work, minus TTL. This is a paid shoot so I won't have much time fiddling with lighting especially since the model will be paid. Any suggestions? Thanks!