Mi amigo Miguel:
Sorry man, I'm not buying it. Stevinson doesn't have THAT many holes that are going to require that type of knowledge, and yes, on those where it is required, he could indeed use a range finder. I have no doubt that it will be legal for his event. But the yardage guide works decently enough also.
And yes, he would also need that knowledge on each of these holes at Santa Teresa:
1,2,3,11,12,15,18
Perhaps it's not as crucial as at SR, but it would be helpful.
My point remains this: of course if he wants to contend, he needs all of this knowledge and hell yes, he ought to come up and play 15 practice rounds - he's never going to get too much knowledge. And hell yes he ought to mark for himself where to hit on the holes you have in mind; confirming the yardage guide through his own experience.
I would just continue to contend that if prioritization is required, then start with the greens and the mindset I suggest, because these yardages can be determined close enough via information on hand for one and all.
TH