Thankfully the friend is incredibly responsible.
Also offer to revisit it in three months after you've actually lived together a bit.
This is a good idea. I will say exactly this when I see him next. The lease comes in at three pages, there's language on common space cleanliness, terminating the lease early, quiet hours & guests, and payment procedures. I feel good. Having done property management as a side job, not to mention watching my parents both be landlords my whole life, this comes relatively easy to me.