Do it my friend you won't be sorry, i built one about that high too!! Best fun ever. You'll crash a few times but after a while and a few dollars on parts you'll be landing sweet as. I got an old run down bmx track just round the corner i take my Aftershock there all the frikkin time. Big air 10- 15 ft sometimes, if you land properly your car should hold up ok , mine does. Good Luck and post pics !!!