Never get a release from edelivery unless it is the only option. I would always recommend searching for the latest release on My Oracle Support. For 32bit Oracle on a 64bit OS, I would probably go for the 32bit version of OGG... however, it's a very uncommon platform for a product like GoldenGate, I don't think there are many production environments running Windows 7 64bit with 32bit Oracle.
The build you will want would be named similar to this:
Oracle GoldenGate V184.108.40.206.1 for Oracle 11g on Windows 2003, 2008