Second board to be versatil

Hello,
I Own already a mid length board 85L skybrid and I’m looking for a second board for higher wind. I 'd like to buy a Omen board but can’t decide between the Flux 47L ,the 60L and the emissary 55L. I’m an intermediate rider of 73kg 59yrs passing jibes. Riding essentially on mountain lac 15% on the sea. Want this board to be oriented to prone foil as well in case of use later on in the sea.
Which one would you pick? Thanks a lot for your help.