FADEC's/DECU's are great. You only need to focus on 2 numbers, rotor speed and airspeed, all the while avoiding whacking anything. 30 second power with drooped rotor gets you to Vtoss, 2.5 minute power gets you to Vbroc, then with MCP selected just set the collective where the rotor just starts to droop from normal flight RRPM and accept whatever airspeed you get.