Since this is my 5th child will labor go fast for me?

Possibly: In general, the first labor is the longest with some speedup in successive labors. One variable in the process is the recognition of true labor by the mother & a tendency to wait to go in with later pregnancies. Since the beginning point is rather subjective, it is hard to say for sure. It is important for you to go in soon enough that you actually have a safe delivery in a controlled setting.