4 months off work, yeah you can be successful. Just make sure to focus and make the best use of your time. Treat it like a job you have to show up to every weekday morning.
That's good, too. I really like the question banks here. :)
They say to keep more recent ones for PTing closer to test date, and to use older ones for drilling. I'll let someone who has a successful outcome answer that one.
... if, one is successful
2. One is successful if, and only ... happy, then one is not successful
4. If one is ... not successful, then one is not happy ...