Leave out section one. You could do a full hour on each, but neither is really crucial to getting up and going in Perl.

Leave out section two. I know this is the stuff that makes Perl so cool, but newcomers won't be able to appreciate it--JAPH, golf, and obfuscation can be downright scary.

Section three is good. Discuss special variables there, towards the end.

Consider saving section four for it own class.

Section five would make a good handout, rather than a lecture topic. Consider added usenet to your resource list.