Sweet.
Nothing to the drags if you use a small amount of mechanical sympathy.
Don't be the guy who says he has 11ty7 killerwasps without actually running it, mph doesn't lie.
Hell, if your scared of breaking something dont launch hard, just do a normal take off and run it through the gears, you will still get a good mph.
Me, something in the 13 seconds area and I'm happy.