If Emirates is availed you can avail dedicated Airbus A-380 Terminal at dubai and its fantastic.hs602 said:BDT 70k/person for Emirates if purchased form iom
Probably you will avail the A-380 to Pearson (Emirates operate A-380 to pearson in 90% of their flights and they depart from that terminal).
If kids are accompanied then Dubai should be preferred as transit. Turkish has only 1 hour 30 minutes transit time and too difficult with kids.