Depends on your GPA. If you have a 3.5 and are hoping to push it a 3.6, I wouldn't wait. If you have a 2.9 and can get it to a 3.1 or so with all A's then that might be a different story.
This year, the first group is interviewing at the end of September, and if this cycle is anything like the previous ones, they will accept a handful of people from that group. Then they'll have anywhere from 1-3 interview groups per month until they are filled up. So in the beginning, they have roughly 40 spots to fill, near the end (February/March maybe?) they may only have 1 or 2 spots left to fill. If it was me, I would much rather interview when they are just starting to accept people, as opposed to the end when they're looking for the absolute "cream of the crop" from each interview group to fill the last few spots.
If you want to give me more specifics about yourself privately (GPA/GRE/etc), I can maybe give you more specific advice. If not, I think the above is some good food for thought. mg1270@nova.edu
