Keep in mind that you don't have to install the full versions of Sonar X1, or X2, just install the plugins you want from them. There will be no need to install any previous version of Sonar as you already have Sonar X3 installed.
Start the installation and select
advanced installationSelect only the items you want installed and deselect everything else.
Now you will only have the plugins you want from the earlier Sonar versions and not the previous versions of Sonar itself.
I hope this helps,