Hello silenthill82
1. Right. Not required. COPR itself is the PR application. IO will keep the original and push for PR procedure. U do not need to worry about that. All u need to ensure that pictures affixed on the COPR are as per immigration criteria. Do carry extra pics in case IO sees some deficiency
2. Bank statements are not always acceptable but probability of acceptance is there. Being on the safer side, carry cash / Travellers' cheque / Demand draft. Ideal combination suggested is 20:80 i.e. 20% cash and rest in the form of TC / DD. I suggest carry POF in the form of Cash and Travellers' cheque only as DD takes about 22 working days to credit where as TC has no such issue. Please note that in case cash is more that CAD 10,000, do fill the declaration form available on the flight and before approaching IO.
3. U need to carry passports (having visa)

and goods declaration forms (accompanying and un-accompanied).
gud luk
asyousuf