The more hours the better is true, the maximum that can apply to your PCSM is 200, which if you have the time and money bumps your score significantly. I am currently at OTS with roughly 60 pilots in my class and the highest zero flight time PCSM scores that made it are in the 60's, the pilots with a PPL- 200 hours score in the 80's and 90's. Getting your private license before you take the AFOQT will help you score higher in the pilot and nav section. Lastly when you take the TBAS my recruiter told me there is nothing you can do to prepare because it is an aptitude test which is false, you