after getting the Oct LSAT score

Hi,
I've been feeling helpless for the past couple of weeks after taking my first LSAT in October and now I'm feeling ready to move forward and ask for some advices.
I quit my job in the beginning of this year to study full-time for LSAT and apply for this cycle.
I didn't feel ready to take the exam in June so I postponed it to October and got 156 which was below what I have expected. (my gpa: 3.4)
I was aiming to get 160-165 and most of my PT scores were 160.
After the test, I thought I was okay with the timing but I misread one rule in the LG section which ruined that whole game.

I considered cancelling the score since it was my first, but then I thought I should apply by mid-November with this score and tell the schools that I'll be retaking it in January.
I'm thinking this will be better than cancelling the score and applying in January with the new score.

With the current LSAT score and GPA, I'm worried that I won't have a chance at getting accepted to second tier schools.

I'm feeling very discouraged at the moment. I would appreciate any kind of advices.