Mock exam marks and question about break

I have been taking both the Stalla and Schweser Mock exams, I keep batting around 72% am I in good shape? Also How long is the break between session on actual exam day?

You write 9-12 and 2-5. But the break is shorter as you need to wait for all the exams to be picked up, plus you need to back early to get seated and get the test materials passed out.