Hank, that's not so bad.
The setup isn't that complicated and it's mostly conventional fixtures and such. You have to be willing to travel - because, as you say there's a need to find the budgets that make it worth your while to truck all that stuff around. The setup is not nearly as bad as the storage and transportation needs.
There are more efficient ways to do the sound that involve less cabinets, but doing it this way makes a really great visual impression and doesn't waste your money on cutting edge technology that isn't needed.
There have been a number of people doing that here in New England, most successfully with the colleges, rather than High Schools. The coverage area is wide - they could easily be at Colby in Maine on Friday and at NYU or Salve In RI on Saturday.