I scored 59.6% on readiness and was predicted not to pass nclex, but passed with 75 questions on the first try :) Don't worry about it so much and just focus on your weaknesses. You will do great!
Stay positive and focused. Final results aren't in yet. I personally did about 50% of the qbank. Some say its harder, but I feel that some of the question trainers where just as hard. I really only did them because it was a requirement from my progra...
I would pace myself with PDA. I personally would do 2-3 tests, grade them, take a break and then review all the questions (right or wrong) one by one. I didn't get to do all the chapters (due to time constraints).