I currently have a hds 5 in dash with structure scan, I'm thinking of either moving that unit up to the front of the boat and putting a 7 in dash or leaving the 5 and putting a 7/5 at the front. What do you suggest?

I have a 5 on the console and a 7 up front. I'm on the bow much more than at the console and my eyes are further from the screen when standing on the bow. thinking about another 7 for the console only because it's easier to read a split screen.