I'm going through a similar internal struggle - have a rocking job offer but can't take a final decision because I don't know how long it'll be before I get PPR.Aprl 07 AOR.
Just said NO to a 70% salary hike new job here in India expecting a news from CIC soon. Forcing myself to believe I didn't make a wrong decision.
Hope PPR arrive soon
On second thoughts, I may take up the offer because I'm August AOR so it isn't likely that my PPR will come anytime soon. I'll have an honest chat with my potential new employers and see what they have to say.
Good luck to you. Hope your PPR comes soon.