Two aspects:

Going to Canada:
-You can work remotely while at Canada waiting for visa processing time. Visit places during weekend.
- If you have no relatives or friends living in Calgary, Ottawa, Toronto, you spends lots of $ for hotel and foods.
-Processing time depends as there will be background check and it will take minimum of 2-3 weeks if everything goes smoothly, otherwise expect delays. Are you ready for that ?

So decision is yours: If your company can provide you access to remotely work, you are financially fine, otherwise not a wise decision.

Going to Nepal.
-You will be living with your family and having good time.
-You will not be able to work remotely as Internet bandwidth will not be sufficient to work (my thoughts only, you can ask friends if they tried doing work through remote connections.)
-Processing time might be little late than going to Canada if you stuck in the administrative background check.
-If your time delayed beyond 2-3 months, will your company still be holding your job. I have seen some of the guys lost job as they could not able to come back on time and got stuck in Nepal for longer.
So, decision is again yours.