At the extreme risk of getting on my squeaky soapbox, may I add a small word about safety with three engines.
Always use an assistant with any multi engine plane.
Set up the engines to be reliable individually, do not make final adjustments by reaching across the running engines.
Always start the engine farthest from you and work toward your self. Never reach across a running engine. Example, if the engine farthest from you dies and the center engine is still running. Stop the center engine before attempting to restart the engine away from you, and even more important if ( And Murphy's Law says it will ) the engines are running and the far engine stops. Stop all the engines to restart the farthest engine.
Once they are all running, go to full power, with assistant, and hold the plane straight up and listen. Any power change or sag, needs to be addressed now, before the first flight. Again, there are a lot of spinning props, that are just dying to get a finger or worse, with all this running. Be aware and careful of multiple spinning props.
Sorry to preach, but I do not want anyone hurt with multi's, so bare with me.
Twinman