No one is ever too young to have a cell phone! My sister got her first cell phone when she was seven! Anyways, for you, I would recommend the SAmsung Gravity T! It is a great device with a resistive touch screen and a four row qwerty keyboard. I really love this phone because it has a qwerty keyboard and a touch screen and a bunch of great features without all those unnecessary required data packages. If you don't like touch screen then I would suggest the Samsung Gravity 3. It came out at the exact same time as the Touch one, and has all the same great features, but instead of a resistive touch screen, it has a numerical keyboard and a smaller non-touch screen on the front.
http://www.phonescoop.com/search/results.php?q=gravity
Hope I have INSPIRED you! =)