It is strongly recommend that you should hire a house inspector. Let me put it this way, you are purchasing the most expensive item in your life. For the next 10 to 15 years, you are going to work your gut out in order to pay it back.
Now, are you going to risk your investment for not hiring an inspector?
Home delivery inspection will be fine. It is impossible to do inspection each time they put something new in the house (I don't think the builder would let you do any kind of inspection, cause the house doesn't belong to you yet).