Hi
spatel2, you have already made the kind of improvement (200 points) that most re-takers can only
dream of. This should be motivation enough.
The thing is that irrespective of
whichever material you choose during your third attempt, you would
already know 60-70% of it; after all, you already know what it takes for a 660.
However, the further score
improvement that you are looking for now, would come from the
balance 30% that you learn, in this attempt.
Don't let the repetition of that 60-70% material distract you by monotony.
Most important, don't just
go thru the motions. Be
enthusiastic and be
determined. Your past score improvement already shows how determined you are. Don't let the momentum wane.