Loving the series Harv, I'd like to throw my two cents in with this - The Big Bertha mk2 http://imgur.com/a/SA7Uh#0 My name is Kyle, no mods on this puppy, she weighs 28.95 kilos (I assume thats what KSP's units are), and the name is unforgettably the Big Bertha mk2. The .craft file is sittin' over here http://www./?w5qtqy6dl8gvj3j I built this thing as 2 things : a tank to knock that skycrane over, and a mobile fortress for anyone at the mun-base. This thing holds up to 11 kerbals at once not counting what you can have on the ladders. It's dockable, but would require it's own station because A. clamp-o-tron is too high and B. it might as well be too high because it is not fitting in that hangar. Docking would be beneficial however, as this thing can generate plenty of excess power in sunlight and a bit out AND it has a nice fuel can to boot. She rolls pretty well on Kerbin and should do even better with less gravity pulling her down, though I haven't tested such things since you only want the final stage. Another nice feature for a to be cluttered base is that she has zero-turn (the ability to rotate in place). To top it all off the center of mass ended up beautifully placed. Getting to the honest part, she has a couple flaws. If you try to ascend a steep incline head on you will probably loose the pod, which leads me to believe you might want to back into that skycrane if you choose Bertha. The part count is higher than expected, but I did try to take it down. On top of that the ladders can be a bit buggy on and off which bothers me. I think I nailed them this time, but I'd test them before getting to the base. I thank you for reading Harv, and if you care to know a little bit extra about this fine lady then I thank you for your interest and read on friend. I created the Big Bertha mk1 as a challenge to a friend saying "Put this on the mun." He never did manage, seeing as the first was wobbly, heavier, and unbalanced. We tried a few things to try and get that thing the distance and stability it needed to be the mobile fortress it was meant to be, but we were only able to crash it into the mun, not land it. When you put out this challenge Big Bertha was the first thing to come to my mind in regards to being big enough to move that crane. I hope whether you choose her or not you enjoy Big Bertha for what she is, and good luck spaceman.