Congrats on the Supertuck!
What is the point of carrying cocked and locked without one in the chamber? I understand your apprehension, get to the range and practice practice practice!
Work with a condition one (one in the chamber, full magazine, cocked, safety on) from a table or bench. Work on picking it up and dropping the safety with your thumb then firing. Be comortable with this before you work on drawing from the holster in condition one. Drawing a 1911, releasing the safety, and firing is really a simple process. Do learn and get to the point where you can carry condition one, otherwise that second or 2 that it takes you to remember and chamber a round may be your last.