Progress?

The first draft of the book I would like to call Hostage to Fortune is finished! (Time for a celebratory glass of wine?)
Begun on 15 March this, the follow on to Her Parents’ Daughter and Second Strand, is the quickest I have ever completed the first draft of a book.
Of the thirty-four days, only eight were without progress. I achieved an average 1,793 words per day which isn’t bad, with a maximum number in a day 6,427! One or two days were pretty much failures with only one hundred odd words, but there were always extenuating circumstances.
This incredible rate of progress was only possible because I spent three weeks plotting out the chapters in advance, (memories of teachers telling me to plan out essays before putting pen to paper – thank you Miss Nicholson, Mr Sant and Miss Honeyball!) so I knew where I was going and who was going to do what to whom and when before I started.
It was only in the last but one chapter that my characters strayed off message. One, Guy, was supposed to do one thing but as the words spewed from my fingers on the keyboard he decided to do something completely different.
I can only say that this turned out to be his mistake.
Unfortunately, the title Hostage to Fortune has been used before. Sometimes A Hostage to Fortune, sometimes Hostages to Fortune, sometimes with a subtitle sometimes not.
Shall I go with it anyway, since the other books date from 1931, and the fifties?
I don’t know.
I can’t think of any better for this book; it works on so many levels.
Mind you, since I’ve only just finished the first draft, I have lots of time to think about it.