As part of a new project, I have to build a chat system where up to 1000 users are online, but:
- There are NO public rooms
- Each user can chat privately with up to 10 other users (ie. each have up to 10 private tabs)
- This will be part of a big PHP/MySQL system which manages nicknames, authorizations, new private rooms and the like, so the chat system does the bare minimum, but with a nice look
- I am ready to heavily modify the server and client part of an existing chat system.
PFC looks like a good starting base for this project; but before going further, I would like to get the opinion of the experts

Do you think that PFC could be "distorded" enough to handle such a job?
Best regards,
Michel