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.....
That's how I have always done it. Get it down, slide it off the jack and drag it out on the floor. In in the reverse order. My new shop is getting a lift cause I am getting too old for that!