Congrats on your flights. It sounds like you have made good progress. However, this is just your first of many hurdles to overcome. Enjoy the accomplishment, but be aware that one solo flight isn't enough to declare victory. IMO, flying with buddy box is not a solo even if it was never used. Yes, you flew the whole flight, but the security blanket was still there. You won the first battle, but now you must face cross winds, unplanned dead sticks, additional traffic, etc. In my opinion, a pilot really hasn't proven they are competent until they have put up ~ ten solo flights (no help, but supervision OK) in a row without a single incident. I'm not posting this to try to burst your bubble, just as a friendly reminder.