"Once the jack is in place, remove the engine mount and slowly let the motor drop down by lowering the jack until the motor sits sideways in the engine bay. Then with the aid of a friend or two, have someone crawl under the tranny while another person separates the transmission from the block and carefully lower the transmission to the ground."
Very important part. Get friends to help you if you do decide to do it yourself. By the way will you be using a lift or floor jacks?