We had better arrange that it is in his plane you fly to Baghdad.
But the thing is, I think you'd better arrange for her to suffer a mischief, don't you?
I'd better arrange some of my own guard to ride with you.
I think you had better arrange for the servants and horses to go back early next week.
"I suppose we'd better arrange to talk to the groups who were backstage at the time, get statements, for what they're worth."
Perhaps you had better arrange with the tower to 'hold.'
I think you'd better arrange to pick her up here.
"Eh, but hadn't you better arrange that part of the business privately?"
We'd better arrange for Williams to go buy some, with plenty of film.
Better to arrange the meeting on our terms rather than theirs.