Lets have some fun here
So say 50 floors.. if indeed it has reached the height of BAC-1 at 215 meters, now you have 9 floors to go times aprox. 4 meters per floor equals 36 meters plus the existing built at 215 meters equals a total of 251 meters to the roof..thats without the rooftop thingy and spire....so now you have the thingy, onion dome, whatever you want to call it which potentialy can be anywhere from 3 to 6 storeys (depends on what render you see) lets say its 6 floors at 4 meters for a total of 65 floors which has been rumoured, thats now an extra 24 meters in which you have a total height of 275 meters, now add the spire at aprox. 25 meters and you have a total of 300 meters which would make it the tallest structure in Canada and first supertall in Toronto ...you got all that..Lol