You probably should be competitive enough for the part-time programs. Even though GMAT ranges for part-time programs are lower than for full-time programs, if you are confident you can boost that score by 30 points or so, that could certainly help (i.e. your current score isn't a huge concern, but a slight one -- a score above 700 removes that concern altogether). Beyond that, it's just a matter of putting together some strong applications and you should be in the running.
Follow me on Facebook