This week's book giveaway is in the OO, Patterns, UML and Refactoring forum. We're giving away four copies of Refactoring for Software Design Smells: Managing Technical Debt and have Girish Suryanarayana, Ganesh Samarthyam & Tushar Sharma on-line! See this thread for details.
I don't think, you can ask these specific questions in the forum and anybody would like to answer but I would say, make assumptions and document them. Some of your questions will automatically be answered as you progress with the assignment.
BTW, I feel that this is really a great assignment to do. If analyzed properly, the whole world of Java technologies/patterns can be implemented in specific scenarios and at the same time the solution can be implemented with very simple technologies as well -