Some of those plug ins you listed should be still available in SONAR X1 x64. When you do the installation of X1, choose the Advanced option and make sure you select all the effects plug ins to be installed.
Some of the older FX plug ins wont be available in SONAR x64 because they are DirectX plug ins that haven't been ported over to work in native 64bit programs, such as SONAR 64bit.
However, you can install the 32bit version of SONAR and they all will work in the 32bit version of SONAR. The 32bit and 64bit version of SONAR can be installed on the same computer.
Finish your projects that have the effects not available in SONAR x64 in SONAR X1 32bit or the version of SONAR they were started in.