@stiknruddr
I am assuming you have your SE CPL from Canada too?
To get an FRTOL, you need to first get an RTR from Ministry of Communication here in Delhi. You will need to submit your CPL and RT from Canada and fill out a form and a DD. Time taken is 15-30 days. Once you get that, you will need to submit the RTR and another application along with another DD to DGCA to get a FRTOL. Time taken 1 week to forever!
SPL is a relatively simple process and the schools here say they can get it done within a few days.
I don't believe particular models of 172 should cause any trouble. It would be wise to ask around though.