Proof of funds is the same thing you submitted with your application (preferably a more recent version of the same). But most people are not asked for it. As to how much money (cash, draft, checks, travel card etc.) you should bring depends upon your own circumstances. How much you need to survive until you start receiving pay is up to you. You should not bring more than 4000 or 5000. Certainly not a lot in cash, use more secure options like travel card (Visa, Mastercard, Amex etc.). If you bring more than 10,000 in cash or cash equivalents, you have to declare this.
Passport and CoPR are a must.
You should also prepare a list of all your belongings. Electronics like TV, Computers etc. must be listed individually with serial numbers. Jewellry must be accompanied by photographs. Other items can be grouped into broad categories like clothes, furniture, books etc. Each item/category must be assigned an estimated value in CAD. If you have other belongings that you plan to bring later, you should create a separate list of those as well.