Congratulations Alex. That photo says it all. I had the same grin when I picked up my Private Pilots license in 1984. However, I did it the opposite of you. I couldn't fit in a 152 (I'm 6'3" 210lbs.) I started out in a Piper Warrior. Due to scheduling conflicts, I ended up soloing in an Archer (great airplane, it's 20hp heavier than the Warrior.) After I picked up my ticket, I cross trained in the 172.

So what's next? Are you going to start on the Instrument rating or just enjoy VFR for awhile?