I'm not 100% sure they have thought this through. They will be overwhelmed with applications from late 30's early 40's single sisters with 20 years regular pioneering and quiet desperation behind them. Put those sisters in a residential school with a lot of single elders & ministerial servants, throw in a few married couples reaching the 7 year itch stage and you've got the makings of quite a farce.
Maybe they will need a new arrangement " automatic Judicial committees for graduates of the theocratic school for evangelizers" - just in case.