Server Bandwidth Optimization

I have this dedicated server. I run it on a 3.2GHz AMD dual core. 2GB of DDR2.
The INTERNET bandwidth is: 50mbit/s down and 10mbit/s up.
So what settings should I set to give the best experience for the clients.
The server have 6 slots and that is enough for me. so just as good experience as possible for them.

So basically the optimal settings for the different server configurations.
Tickrate
cl_cmdrate
cl_updaterate
rate
sv_maxrate
cl_interp

I hope you get the idea. Thanks for any help.

http://www.reece-eu.net/drekrates.php might help

Okay, thanks. What about tickrate?

66.7
Anything else messes stuff up.