It doesn't matter where you put the module, but yes those procedures are correct. However, you can specify the version you want using the CPAN module (perl -MCPAN -e 'shell') through the install command. From man CPAN:

...if you would like to install version 1.23_90, you need to know wher
+e the distribution file resides on CPAN relative to the authors/id/ d
+irectory. If the author is BAR, this might be BAR/Foo-1.23_90.tar.gz;
+ so you would have to say

          install BAR/Foo-1.23_90.tar.gz

       The first example will be driven by an object of the class CPAN
+::Module, the second by an object of class CPAN::Distribution.
[download]