Thank you Michael, Ron and Rafael for your serious and professional input! Being very new to all this I have no other alternative but to relay on the advice of pros.
From all the input I got so far looks like using the z7 with the Flash XDR is the way to go. If, for some reason this won’t work then I will have to buy the EX3.
I was planning to buy the EX3 anyhow but budget doesn’t allow me to do all at once.
Thanks again!
Ofer Levy
Sydney, Australia https://www.oferlevyphotography.com