Ok, I just read through everything very quickly, and everything my fellow moderators have said is correct.
Regarding the grace period CJW mentioned—
Users can change their names on their own if their account is less than 3 days old or they’ve never made a public post.
After that, users will have to message us with a username change request.
Yes you did, actually. You met all the criteria for basic.
If you go to your profile, just on the simmary part, you can see your stats and compare them to the requirements for TL1. You have met and exceeded a of them.