Its not hard to install yourself. I did my own. That motor is about 200lbs i think so you should use a lift. There is two wires for the battery. The gas line. The steering and the throttle controls. Adjusting the steering and throttle takes a bit of time but it is easy. You have to get the right length of cables for the throttle and shifter. You can do it.
The place he bought it should put the motor on the transom for free. They were going to hook mine up including the linkage for free.
Never lay that motor down on the wrong side.