As Leon explained, this is the sequence you can opt. But, in my view (and personal experience) there is not much point to waste months in TRV and TRP steps as probability is really low. I would suggest to follow the the confirmed path of applying the sponsorship from within canada, though its painful to be away from family for a while.
I got my spoonsorship processed by CPC in 35 days and file has been transferred to ISB embassy to process the immigration. Thats the challenging part where i am not sure how long it will take.
Leon, do you have any idea how long it can take for processing the immig case (after sposnorship and file transferred) vioa ISB embassy for new born dependant?
Thanks,