I don't know if you're following this or not, but here's a handy guide for migrating from one server to another:
Zimbra :: Blog » Moving ZCS to Another Server
A couple things, firstly you will probably want to install the same version of Zimbra on the new server, and get it working before you upgrade to the new version. As for the LDAP listener error, you may want to check to see that there's nothing running on port 389 on that server already.
(I edited your post and removed your server URL)