The King James Bible does include the Old Testament, Mini. read the Book of Job - it's beautiful in the King James. Also utterly depressing, in that it shows God up as a completely amoral being who is happy to gamble with the lives of real people.
I have an enormous problem with the idea that God either wrote or inspired the Bible, and that everything in it is his will - it assumes that literally everything that has changed since He allegedly wrote the book does not meet with his approval - the abolition of slavery, modern medicine, women's suffrage, the drive for universal literacy and education, all those little things that us fallible human beings feel are a good idea.
I don't believe in God, but if I did, I would expect him to do what any good creator and author of non-fictional and instructive texts does, and write updates editions which incorporates those changes to society/technology/philosophy which make sense in the context of common sense.
The alternative is to believe that God does not care enough to update his word, and that he has no common sense.
Lastly, to the poster who mentioned poly cotton - I don't approve of poly cotton. It's a sweaty waste of time. God was right on that one.