You can take as many suitcases as you like. I would suggest no more than 4 as it would be a heavy load for a female to carry in and out of the airport unless you get a porter and pay them on both airports. But you will have to pay extra for 2 suitcases which will be 10,000 Rs for each suitcase or closer to that if you travel with PIA. All the suitecases should be under 28KG. Try to keep it to 26 or 27KG max as their weight machine on the belt is sometimes screwed up. The customs in Canada won't charge you anything as you will be permanently moving to Canada. Declare all your belongings to Customs and declare all your jewelery that you are bringing and what you left in Pakistan and will be bringing it later on. Also, make sure you get all your jewelery appraised and take photographs of them and present it to the customs officials for their records. This way when you bring the rest of your jewelery the next time they won't charge you anything. Make sure you don't bring anything with you that is illegal in Canada.
thanks again