I heartily recommend WWW::Mechanize for web scraping. HTTP::Recorder or WWW::Mechanize::Shell can do much to make your life easier. w3mir works well for mirroring entire pages/sites, including multimedia.

I would suggest searching CPAN for PostScript modules. You may wish to take a slightly different approach with PDF::FromHTML (credit Ieronim for that link). I can also recommend PrimoPDF, if you decide to go that route.

HTH,