I think it's quite likely you'll have your card by September, unless there are unforseen delays. You're on track to have your PPR by June/July, and then add in another 60 days for the card.. you should be fine.
To your second question - I'm not an expert in Canadian immigration law, so I'll defer to anyone who knows this for a fact, but I do know that in the US, the Green Card is independent of your passport - you don't need to get a new green card if you get a new passport. I'd imagine that once you have a Canadian PR, changing passports shouldn't be too hard.