Fork Or Cron?

I'm the author of a little used, little cared about ftp indexing script (http://www.apokalyptik.com/ftp/) and i'm working on - slowly - releasing version 2.0. Version 1 runs as a cron job (or a daemon) and its one monolithic piece of code that handles managing of the queue of new and old sites to be scanned, as well as the scanning of these sites... In version 2 I'm looking to seperate these functions into seperate mother/daughter daemon processes, and I'm not sure whether it's worth the time messing around with the process forking functions in php, or i should just make truly seperate file/processes... Any input would be greatly appreciated. Thanks in advance!