You WILL DEFINATELY need 1 or more keels to prevent the wind from taking complete control. 2 keels would also protect the props & rudders on setdowns.

Once you get the SIDEWAYS drift down to what you will accept, then the main motor size will be much smaller.
What is the weight with no battery or motors ?
Is the bow curve really that far back as the picture looks like ?

I dance to a different tune all the time.