If you just want to practice orbiting, this is the easiest and simplest way. You can escape easily with it, but you wont be breaking any speed records since it's just 1 small Liquid rocket. I have gotten 4800m/s with it after escaping, that was very far away though, gravity had almost no effect. Ration the thrust while your in the atmosphere, you'll waste it overcoming gravity and resistance. Wait until you get high and you'll have plenty for maneuvering Very stable too. http://mod.gib.me/kerbal/mods/ You'll need to extract the XL fuel tank, located under the SynthOrange directory, into your parts folder