Okay im going to step in a bit here, your 13 years old i congratulate you for having the cash to spend on something decent. but remember this, im pretty daym strong, and the 10" on its base is a bit of a handfull trying to move around. a 12" is probably as tall as you, in solid tube and would only just be shorter in length in truss. Unless you have somebody to help you move such a massive instrument go for something more manageable then when you can lug this gear around by yourself run with something bigger.
a nexstar is tiny compared to these dobs.!