Advice wanted to set up GIT repository manually sync'ed form SVN

Hi,

I am a realitive GIT newbie, ie I have not used GIT on a project but have 
read quite a lot of documentation on it, over the last year or so.

We are wanting to have a git and git-web repository that is synced to a main 
SVN repository, wh only want to read the SVN repository at this stage. I am 
planning on using git-svn raw, and do fetch'es by hand.

Is there any advice that I should know at this point before proceeding ?

Many thanks in advance,

Aaron