What to use for a wedding

[satijntje]

Hello Hasselblad friends.

I have been asked to take "some pictures" at a wedding of a friend where I am a guest as well.
It's not foreseen that I replace a professional wedding photographer (who will not be there).
The total number of guests is between 20 and 30.

I do own a Nikon Zf with 24-120mm Zoom and a 40mm f2 glass, but I prefer to shoot with a Hasselblad.

I do own a X2D and a 907X CFV50II and the 28p and 45p lenses.

Any recommendation you can give me?
Any additional XCD lens that I should get?
Maybe rent a 90mm or 80mm f19 lens?
What about flash?
I have no idea what the light conditions at the wedding place will be.

As it will be the first time for me that I am doing this, I would really appreciate to get some guidance from you.

Thanks a lot