need an advice - G day in 2 weeks

Hi guys,
just finished prep 2 - got Q47 V32.
quant: alot of stupid mistakes, i actually finished the test 8 minutes before time expired.
verb: rc- 2 mistakes. cr- 4 mistakes sc- 9 mistakes.

im between 620 and 680 in mannhattan, i can hit 80%+ in all topics in OG and reviews on time, but somehow cant get my score higher.
not a native english speaker, dont have much math background, but im comfortable with logic and math never the less.

target: 720/730

any tips about how to go on? i thought about solving a simulation every day...not very creative..
do u think i should reschedual? any one knows the pollicy about that subject?
is my target realistic at that point?

p.s - studied for 2.5 months so far, i have the next 2 weeks off, and afterwords go back to work,,,so its another think to think about.