WARNING!
It's a bit unstable due to how KSP works and the way the ship was built. Also at the start of the launch start the engines with 1/3 of thrust, then when you are accelerating at about 50m/s put the thrust at 2/3, then after the end of the runway you may max the thrust but it will start breaking the sound barrier almost instantly. Also DON'T TIME WARP, the ship will implode.
mods needed for this build:
1) Fuel Tanks Plus
2) Modular Rocket Systems
Both work in 1.0.2 perfectly
put the file besides the stock ships