Great advise, I guess I want a more cinematic look, Unfortunately I cant afford HMI lights let alone the power source to run them,
But listening to the advise gives me confidence, I think I will go for a more natural look and try and use the sun as a backlight as Mark suggested. It should set the tone of the scene better.
Many thanks for all your help,
I keep over thinking the technical and loose sight of what I'm trying to achieve visually