A little wrestling obsessed? Kidding.
By shaving your sides, you would be exposing your scar completely. For me, anything lower than a #4 guard (on barber's clippers) cut inverted will expose the scar. How you cut your hair is irrelevant in regards to how many mega-sessions you can have, or I should say, how many mega-sessions it's possible for you to have. That varies from person to person and is dependent on your particular donor availability.
Rather than read about the scars, I think you should take a look at the pictures to get an idea of how scars settle over time.