But it’s a LOT easier to apply to five-seven schools. Don’t apply somewhere “just to see” or because you “might” like it. Apply to schools you’re really acquainted with–ones you have a lot of information on, preferably ones you’ve visited if that’s within your means. Applying to a ton of schools means writing multiple essays (even if you do the Common App, there are supplements) and paying application fees and miscellaneous fees, such as those to send test scores.
(The one about starting the Common App early is a good idea, even if you have no idea where you want to go! Your essay and the boring information can be done over the summer.)