If I can offer any advice, especially at the 1a level, it will be to swallow your pride, avoid a flat backline and find a damn good sweeper. HS linesmen are fucking ungodly bad at getting offsides right, and it's difficult to keep your kids organized back there. A blown call, which will inevitably happen almost every game, can determine a lot of outcomes.
It's overly simplistic, but I always ran a 4-4-2 double diamond and emphasized speed from my outside backs on overlapping runs. Our team leader in assists were often my right fullbacks. I had high expectations for the workrate of my outside mids, and subbed them pretty liberally.
Soccer is the best high school sport to coach in rural areas. Community rarely knows anything about it, so nobody questions what you're doing, and (generalization incoming) Latino players and parents are generally more appreciative, more respectful, and harder working(I'm aware of the stereotype) than your wealthy white club players.