well, have you read the documentation on PAR and on the pp script? it's not clear how familiar you are already with par. read the docs and play around with it a bit.
i'd just package your needed modules into a .par-file and then in the script do a "use PAR 'file.par'".
you have to test if your script is fast enough with that.
if you have problems with pp then you're welcome to ask.