wow! congrats!
did you do it by hopping trough biomes or using a rover? (or both =P)
I'm trying to find out the right way to use the Science Lab. I built a single rocket that broke down in four parts: One orbiter/return capsule with a Kethane detector (I know, Kethane is cheating), one rover/lifter (no wheels but gets around by flying), a lab/livingspace/fuel base, and a mining/fuel/refinery tower. After having landed all except the orbiter I connected the mining tower to the lab (using KAS), put two kerbals in there, and then had the third one use the rover/lifter loaded with science to hop around to the various biomes (Flats, Lesser Flats, Great Flats, Greater Flats, Lowlands, Midlands, Poles, Slopes, I only missed the highland one), and refuel at the main base after each hop. I only used the Science Lab to reset the goo and materials modules, and returned with about 60 experiments (went up with the rover with 3 kerbals on it, met up with the orbiter, and used that to get home).
Hard parts: the lifter. It's really hard flying around on an unbalanced vehicle. Low thrust and careful use of RCS and reaction wheels for maneuvering, after some practice I got better at it. Using it to lift the heavy Science Lab module (which also had fuel tanks and that big station-module) to the surface and landing it close to the mining tower was even harder. Getting the entire unbalanced contraption into orbit without it falling apart took quite a few tries as well. During the whole mission I felt myself getting better at doing stuff manually, where I used MechJeb before. Rendezvous, docking, landing, maneuvers, I all do them manually now. I do still use the orbital calculator to find planet-to-planet transfer windows, though.
I'm really liking these transformers-type builds with multiple craft in one launch. Yesterday I flew by Duna with a Science Lab orbiter, a lander for Ike, and a small landing probe for Duna. Does anyone know of a mod that has robotic arms or other moving parts? I like trying to build tiny aerodynamic packages for launch and then expand those into big spacethings.