Glassfish tuning

We have here an application developed using Java EE 5 stack (using JSF, RichFaces, EJB, JPA, Hibernate, JAAS) that runs inside Glassfish 3.1! The thing is we are in need to run it as an installable deploy (actually many deploys =]).

My question is: What can we do to have the smallest footprint for the system?

I've already studied about:

• uninstalling thing through upgrade tool (e.g. the admin parts),
• run the application using embedded glassfish (but using the already existent domain),
• configuring domain.xml to erase features 开发者_运维问答(but at a trial and error way),
• found some work on how to configure glassfish for production environment.

But as the system will be used by one user at a time, I would like to listen from you about options in this environment.