Hi, some have advised me the original sto-fen is fine while others has told me go with a larger one. I have a Nikon SB-800.

Like to get some confirmation.
In December, I want to do some portraits of friends outdoors where I won't be able to bounce, ie - botanical gardens and along the civic centre and waterfronts. I want to do 1 or 3 people full height or half height in the afternoon including during times of 12-3PM. In the gardens I may get some shade but along the waterfront and civic centre I won't have that.

I want soft light with minimal shadows.