[CentOS] Rsync + crontab centos5.1

Just looking at the "man rsync".

Might as well be duagnosing a plattypus.

I have made a dir on my Cent samba shares to setup a local fedora.repo

(1) How do I get it to run weekly at a certain time. is this correct?

crontab -e 22 7 0 0 /usr/bin/rsync -va
/Fedora-Mirror  /local samba share.

(2) Trying to get cron it run 10pm every saturday night.
Log whats happening.
update packages, include new packages. 
Exlude extra languages from things like openoffice\xorg etc.. that the
family don't need.
(family lan)

(3) Would one normally download the mirrors "repodata",
or run create createrepo oneself?