Is Cooley the only school you got into? I would take a year off, study take the test again, write a better personal statement, make your application as strong as it can possibly be and then apply early to schools. a 3.0 and if you can get your score up to 160, you can have a lot more options.
If you take the LSAT twice, most schools will either average your scores together or use the highest score. I have no idea what happens if you take it three times. You may have to wait a while before you can take it again, check with LSAC. I would definitley advise taking a course if possible. I took kaplan and found it to be very beneficial. They had a test center in my area and I went every single day and took at least one full LSAT under actual test conditions, then analyzed my answers. Very helpful. It is expensive, however. If you do take a class you will get out of it what you put into it. Work hard, review your answers (don't just keep re-taking tests without review), and make the LSAT your single focus.If you're not in a rush and can wait a while, I'd say take a class and re-take the LSAT. If you do decide to go to Cooley, take the time to research all aspects of the school and understand what it's going to take to succeed both in law school and afterwards. Transferring is not easy, and you really should not go to any law school that you aren't prepared to graduate from. I hope that helped, good luck!