Been awhile since you wrote this but Holiday World posted a video update with a timeline for testing since their track was completed or near completion (while KI had just started going vertical). If there aren’t two crews for testing, it seems there’d be no way for KI to get ahead. Plus, “late spring” is any time through June 19 without being a lie.
Wish KI had a festival similar to Knott’s Boysenberry Festival or Peanuts Celebration in the spring so it wouldn’t matter so much when new rides opened.