I'm still pretty new, but it really depends on where you are. I have one school in Washington, and I scouted Washington, Oregon, and Idaho immediately, and then waited until after signings to see whether I needed to scout anybody else. I think I ended up scouting Montana and Kansas also, based on available players that weren't being fought for.
With another team in Tennessee, states that are within 360 miles include Tennessee, North Carolina, South Carolina, Georgia, Alabama, Mississippi, Arkansas, Missouri, Kentucky, Indiana, Illinois, Ohio, Pennsylvania, West Virginia, and Virginia. It's kinda hard to just scout all of those at the beginning. So I look for players that look interesting, and then scout their states. If everybody in Kentucky is under 10 DEF and under 10 ATH, no reason to scout it.