Want some honest advice? If you're moving away from DA/SA, why stay with HK? LEM is an option and a lot like it. But to me, if I am doing DAO I will just go to a striker fired safe action pistol like an M&P or Glock. I am a long time HK owner and spent the past year shooting DA/SA pistols. I've moved to M&Ps.
Know the status of your weapon
Keep your muzzle oriented so that no one will be hurt if the firearm discharges
Keep your finger off the trigger until you have an adequate sight picture
Maintain situational awareness