Dude, my advice, submit the $160 for one school. You can either add more schools later, or consider it the price of security. AMCAS is already ten days behind, (they're verifying ready to review apps from 6/4), so if you wait, you'll be late-ish for this cycle. I am waiting with as much hope as possible to hear back from my waitlists, emailing updates and LOIs, but if I need to, I'm in line for the new cycle.
Don't think of it as giving up; you're just planning wisely. I'll use an example: I was shadowing once and a patient had cancelled his DNR because he was worried that it might imply that he didn't want to fight/keep going. The doctor walks in and she talks about the plan to move forward, their goals for fighting his disease and when she wanted him to schedule a follow-up when he was discharged. Then she says, look, the DNR isn't going to change how we care for you. It is just a plan for the worst case scenario. It is supposed to let us know what you want in a situation where you might not be able to tell us. Don't think of it as giving up, just think of it as covering your bases. Even the ones you don't want to think about.
I'm paraphrasing, but the end result was the guy reinstating his DNR, just in case. Yes, submitting the 2015 AMCAS isn't signing a DNR (although it might feel like it lol), but it allows you to cover your bases, just in case.