Yes, set up the PP as NAM1, but also take note they can't be used at the same time meaning you will need to switch from one to the other to use voice, etc then back for data. But of course you might be able to figure out a way around that. Possibly mixing it up a little like do all the NAM setting for the cricket MDN and maybe try the WAP setting for PP. Just a suggestion.
Also if you search this cricket forum for dual NAM there is a tutorial by Berry on how to set it up.