Crane's R3V17 resolved.
edit: I checked your intended solution, and yea that is quite a complicated one to enforce. My solution I attached for your V17 is nearly similar to what I did before for V16, where I simply outpaced the zombie. I still use all the skills, but I end up using the builders in a different place. However, instead of sending out the climber immediately, I did the waiting game before doing so and then everything is nearly the same as before.