the problem you will find is when the car is high enough to drop the tranny out your floor jack cant jack high enough to put the tranny back in----get out your tape measure-----you need 17 inches clearance to pull the tranny on the floor under the floorboards----it cant even be on the jack at that point----putting it back in---slide it on the floor----get under the car with the jack----lift up the tranny and put it up on the jack----jack up the jack and wish that the jack could go higher.....
I've changed a bunch this way, before I had a floor jack I'd drag them up on my abdomen and lift them up in place. Too old for that now, have a lift and high lift transmission jack, much easier now. lol
