One thing you might have noticed about the centralized vs. decentralized discussion in the last page is the scale of the programs compared. The Czech Republic program contributes great content to the Czech Wikipedia each term, and they are able to do so with very little budget and no paid staff members, thanks to some very dedicated volunteers from Wikimedia Czech Republic. But they're not looking to grow the program to 75 classes, like the U.S. and Canada program supports.
If you're looking for your program to scale beyond a handful of classes, it's likely that you will need to have a paid staff person running the program. To get a feel for what a program manager might do on a daily basis, see this page written by the program manager for the U.S. and Canada program, documenting what she does on a daily basis.