I was using Zenoss_Core_Installation_01-072012-4.2-v08.pdf because my first installation was with Zenoss Core v4.2.0 then when I upgraded to 4.2.3 I just read only the upgrading section of the version you mentioned so I didn't notice the errors.
As for Java and rabbitmq, Zenoss does not support the latest version which means it might very well be working. However, in case you have a problem it might become more difficult to get help since Zenoss developers are not familiar with the new versions. On rabbitmq web site for example they warn that there are differences between v2.x and 3.x and that 3.x is not 100% backward compatible.