Please answer the following please :
I got PR visa which will get expired in Jan 2014. Before visa expiry, I want to visit Canada once to continue my PR. My
wife is pregnant and the expected baby delivery date is mid-May, 2014.
As others have said, I hope that is a typo there because if your PR visa expired in Jan 2014, it's too late to land in April.
I will be travelling to Canada in April and apply for PR card and will be back in one week.
If your visa is still valid, you must land before the baby is born. Once the baby is born, the visa of all family members who haven't landed yet become invalid based on change in family composition.
As my wife can't travel now, she will be visiting Canada alone after the birth of baby, in September and apply for her PR card.
No she wont because her visa will be invalid, see above.
After that, when we will move to Canada with PR cards in next year.
After that, we will get sponsor visa for our kid.
If the baby is visa exempt, he or she can come with you to Canada while you apply for sponsorship but will be on visitor status so no health card for your baby. If the baby is not visa exempt, it is possible that a visit visa will be refused based on that your intentions are not for the baby to visit. You can apply for another visa for the baby called a TRP but if you get it, it becomes a sponsorship on H&C grounds and will take much longer. Keep in mind that you may be sponsoring your wife as well if she did not manage to land before the birth of the baby.
1. Is this whole process feasible?
With a few flaws, see above.
2. Is it better for me to land in Canada before baby birth?
If you want to land on the visa that was issued to you, you must land before the baby's birth.
3. Is there any other option for us to continue our PR?
Yes, you could ask the visa office to wait until the baby's birth and then re-issue the visa for all 3 of you. The visa office may say tough luck, we already issued your visas, use them or lose them.
Another option, you land before the baby's birth but your wife doesn't. Her visa will be invalid then. You could request from the visa office that they add your baby to your application and re-issue the visa for your wife. If they say, too bad, your file is closed, we re-issue nothing, you would have the option to sponsor your wife and baby.
Third option, you speed up your move and both travel to Canada now, preferably to a province with first day health care like Alberta and stay there. Have her give birth there and stay in that province for at least 6 months (for health care reasons). Then you are both PR, your child is Canadian and you can do what you want.
4. How much time it takes to bring our kid to Canada through Sponsor Visa?
Depending on the visa office, it can take some months or even longer.