I'd try to give him at least one dry all the time spot and don't forget that goats hate to get wetted by rain so he is going to need a good
shelter, which can double as that always dry area.
He will need "toys" things to climb on (king of the mountain is a favorite game for goats) a big heavy duty ball to butt around and don't forget that goats are climbers and jumpers.
These are highly intelligent creatures and they are escape artists.
I would not worry so much about his proximity to the females, just so long as they can't hook up when you don't want them too.