Yy, Adventure sync will be available to all level 5 and above trainers in the next few days (according to Niantic), you just have to be patient.
Welcome, Tinker, it is addictive. I started playing with my DS3 but ended up getting a separate account because I was frustrated with his constant evolving. Then DS4 wanted an account too, then DS1 (who has learning difficulties so needs help doing it) wanted one. So I now ‘manage’ 4 accounts. It’s a full time job 