Yes...there are a three individuals that will have access to this server. Which is exactly the reason that i would like to perform this alteration. I guess i'm just a very cautious individual. people can do things( however un-intentional)...that can really screw it up. I've done it myself.
As for the chmod command, I already know how to use it. Which is shown by the fact that i changed the previous dir to 644. I have already reduced the services down to an minimum.
I have utilized the Deception Toolkit. Set various cron jobs to check system file integrity, password strength, /tmp directory alterations, alteration of number of SUID/SGID files, fingerprint of OS ports, etc......
I don't think that i really need to change anything else then the permissions to keep authenticated users from making a devastating mistake to my system.
I have been allowing some good friends...check out the Linux OS. My contribution to the advocation of all the *nix OS'.