I need suggestions for an online trading application

Hi,
I am going to develop an online trading application. I have decided to use JAVA EE 5 and I have read "The Java(tm) EE 5 Tutorial". Because I am a (C++) programmer and new to Java, I need suggestions to start development.
Here is summary of the system in my mind. There will be
a database to store user's information and operations,
a web client for creating and managing user accounts,
a desktop application and web client for users for online trading and
an application client for brokers for risk management.
Here is a sample scenario for flow,
- User wants to create an account
- Company creates an account for user
- user gets the prices and trades via application client (web or desktop)
- system informs dealers and broker via their client platform
- broker perform necessary operations.
Java EE 5 Application model fits the system I am trying to develop but I feel I still need some guidance and there are a few things I couldn't figured out yet. For these reasons I want to develop a prove of concept system and this is the system in my mind.
- A simple database
user (user_id, user_login, user_password, user_name)
stock (stok_id, stok_name)
operation (op_id, user_id, stok_id, op_type, op_amount, op_value)
- A price server
will generate random prices and push new values to registered clients
- A web client to create new users (for admin)
- A web client to display operations of users (for user)
- A desktop application and web client for operation entries (for users)
displays prices coming from price servers, sends users trade requests
- A desktop application client for informing admin about trades (for admin)
when a user buys or sells something, this client notified (user buy/sell something)
What do you offer for this sample system?
Which is the best IDE?
Which Application Server should I use (scalability and speed is critical)?
Which Java EE APIs should I use?
JSP or JSF?
Will I need hibernate?
And so on.. I need some points to start and go.
Thanks for any help.
Ahmet

It wouldn't be an arbitrary track. However, maybe you could make an arbitrary track by dividing the track into segments. Each segment is either a straight line or an arc. These are easy to model the cars' behavior on, because you'll have a straightforward way to determine the direction the car should be facing, and the range to the left and right where the car can stray and still be on the track.

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