Hellooo! Great challenge! I've been trying out different types of rockets for the last 3 hours now and have manage to squeese the time to 10k at 24 seconds. Mine as you can se is a small 1 man capsule, parachute and ASAS with a 6-mainsail cluster under 4 x200-32 and one x200-16 tank generating 9mN of thrust: It is a stock try, but mechjeb was bolted on to get some stats and to keep Jebediah from talking to himself. Also it steams up a bit when it reaches its top speed. As you can see Jeb thinks this is very pretty: 24 seconds BABY! Jebediah safely back at KSP and unusually there is just a short walk back to the launchpad for another go! "What a ride! Lets go again!" - says Astronaut and hero Jebediah Kerman.