Well you can do all your multi checks in Canada, no problem . According to the new rules you need to do one set of checks in India( Single or Multi). It is advisable to do multi abroad much cheaper.As far as IR check is concerned yes you need to do an IR check in Canada (atleast 45mins). As far your IR is concerned the multi flight in canada will do ....provide proper dgca authorised documents of the skill test it should be good enough, no need to do the same flight in India.A friend of mine had the same case , so I can confirm you on this