Everything really depends on YOU. For Self-Study, how self-disciplined are you? If you have the right study materials, I believe you can do it on your own. There are hundreds of stories throughout this forum and others that support self-study. Make certain you have PowerScore Bibles (LR and LG), and the PrepTests. If additional materials are needed, try to get some of the Kaplan Material (ie., Kaplan Big Orange - it has the questions divided by type, RC, Games, Logic Reasoning - Strengthen/Weaken, Flaw, etc.). Many also suggest Nova Master the LSAT for RC and LG. If you're unable to devise your own plan, sunfunliving (LSD user) has a e-book w/2-4-6 month LSAT prep plans.
You can do it, plan your work and work your plan. Be certain to take a diagnostic test before beginning. This will ensure you're better able 2 track your progress.
Go 4 it!!! Happy Prepping