Just plan for all contingencies and double up on your safety
measures. Take anything heavy off your engine that you'll be removing once on dry land and even drain the fluids. I like to pad everything that might get a scrape. Have some friends over and appoint one to be in charge of safety
at every inch that it is lifted.
Good luck. It is not necessarily the "old" way. There were cranes many years before there were heavy diesel
engines in sailboats. It is the economical way.