ftp chroot directory structure

[Ray]

Hello,
I am setting up a new web server that must host data from an existing 
webserver. We've never had an organized folder structure for private data, 
(passwords, secure data, etc) and I'm trying to change that.
there are currently a number of virtual sites all handled through apache 
virtualhosts. all (or at least most) users must have ftp access.
my original thought was this:

apache/priv_data/domain1
apache/pub_data/domain1

where 
apache/priv_data/domain1 
contains a soft link to 
apache/pub_data/domain1
and the ftpchroot is 
apache/pri_data/domain1

this doesn't work like I wanted it to. I can't follow the link with an ftp 
client. obviously the best solution would be 
apache/priv_data/domain1 
which contains
apache/data/domain1/pub_data
with domain1 as the ftp root
and pub_data as the http root,
but I'm not the developer of all the sites, and I don't want to have to 
trouble shoot other peoples possibly incorrectly written sites (hard coded 
path structures)
What can you suggest as my best solution?
Thanks
Ray