It's always nice to be in a place where you have more songs than you need for your album. It's a luxury that a lot of musicians don't have. As for the iPhone voice memo recordings, you're asking the wrong fella. I'd never consume music that way, but perhaps people do? I'm actually not even sure what you mean by it. Yep, I'm old.
But, if they're strong songs, don't treat them as some sort of castaway, use them in the future as a gift to your fans. But yeah, I'm the wrong guy to ask about that particular media.
I'm excited to hear your work. Feel free to send me tracks etc if you ever need any feedback, I'm happy to do so. I like your music.