I think that a MPA or Masters in Public Policy is a great idea. I am somewhat partial to an MPA, since I am a current MPA student. If you can not take off a year and work on the LSAT what about working on it for the December exam and just working at a good pace. That should give you a good amount of time to re-do the test. I know what you are going through. Last year I applied, and did not get in anywhere. I reapplied this year with a better LSAT and will be starting in the fall!