That's excellent progress! Getting a working test-bed and/or robot drivetrain in the first 3 days is an awesome achievement especially for a rookie team.
Now I would recommend deciding what it is that your team wants your robot to do. Are you going to score baskets? If so how and how are you going to design and build a working mechanism to do so?
Here's an excellent video on First* design. And
The Kitbot on Steriods is allways a cool robot platform for any team with limited resources.
With all design challenges I would suggest looking through
video of past robots to see what worked and what didn't in similar games in the past. This year's game is most similar to 2006, 2009, and
2001.