Definitely bringing a digital stopwatch! Good idea 
I score a 77 on am and pm section for the 2012 mock. This was ridiculously hard in the fra section. Some were just so tricky. I been scoring 77- 88 on the schwesser mocks and it was no where as deep compare to the cfa mock. Schwesser test focus more on the big concepts where as the cfa test test you more on the little details and testing your understanding by askingquestions from another prespective
The 2012 mocks were extremely harder than then 2010 and 2011. I scored in mid 60’s in the 2012, while scoring in low 80’s in the 2010 and 2011 mocks.
This is my 3rd time doing the level 2 exam.