Do you 100% understand the procedure of getting the engine & box out ?? it has to be dropped through the engine bay onto some sort of trolleyon the ground and rolled/draged from under the car and in order to do that the front of the car has to be lifted close to a metre off the ground. This is where the crane comes in to actually lift the car clear.
You would be so gutted if it fell off the jacks and you broke the throttle bodies or gearbox bell housing e.t.c.(thats what happened to me

and it was an expensive way to learn )
Most Hire companys will deliver and collect for a tenner or so.
What was it Granny used to say "if a jobs worth doing ..........................."