Good point! Perhaps it's best to just persist with the GMAT and beef up on my weaknesses.
In response to your questions:
1. I started seriously studying for it for about 3 weeks to a month. Prior to that, I didn't have any specific study materials and would just do random questions haphazardly.
2. I used Kaplan online software (basic videos + practice quizzes and CATs)
3. I took 3 practice CATs with the following scores
First, 610 (38 Quant, 36 Verbal)
Second, 640 (41 Quant, 37 Verbal)
Third, 660 (42 Quant, 39 Verbal)
4. Here's where things get REALLY confusing and bad. On my official GMAT I scored a 570 (32 Quant, 37 Vebral) I completely bombed the quant and I'm not sure why!
-----
My goal is to get a 700+. I'm planning on applying to Vanderbilt, WUSTL, Johns Hopkins, Georgetown, Rochester (Simon School of Business) for MSF programs.