My question - what is your long term goal?
If your long term goal is Management - go the CP route.
If your long term goal is to work in a backstage support environment - go the PI route.
While I value all the experiences I've had with Disney (I did both the CP 'Entertanment' and PI 'Training'), hindsight is 20/20 and I wish I would have done things much differently. To be honest, I sort of wished I would have skipped the PI, extended my CP and better prepared myself for management. Now I'm playing catch up by having to take a step backwards.
The experience I earned on my PI was incredible, but it was backstage. Management opportunities are looking for people from the parks/resorts that face Guests everyday. I've learned the hard way that you cannot jump from backstage to Management as easily as I hoped. So I stepped down from my backstage role (where I've been for over a year) to take a pay cut and return to the parks.
Additionally, I wish I wouldn't have done Entertainment on my CP, rather attractions or resorts - but again, this is hindsight speaking and that leads to a whole different conversation.