The KOTAR range flight with multiple planes in the pattern was always my favorite training flight.
Focus on getting Base Speed, Base Alt, and Base Distance right first. Most of the other parameters flow from there.
Although your picture is a good representative update of what’s in the original range guide, I expect that Stalker will teach you to execute a Climbing Safe Escape Maneuver (CSEM) after each pass. In that case, your Extend and Downwind legs will be shorter …. at the ridge in the south, at most. Perhaps a bit shorter than that as you execute your downwind turn once your nose is up and throttle is back to MIL power. You can also use the ‘extend’ leg to manage spacing on the plane ahead of you if necessary … never do that on the Base leg (that is don’t change the position of the base turn or the run in turn to manage spacing. Take a dry pass instead if necessary and correct on the ‘extend’ leg.)
I always flew the downwind to cross over the flat plateau that is just inside of your downwind marking. That put the range, visually, just at my inside wingtip. A ‘target’ (the range, a runway, a target, etc.) just off your inside wingtip indicates proper turning room to that target … kind of like a pivot point.