Thanks for all the answers. That link really helped, wibou. It showed me my numbers were in the correct ball-park Also thanks for that confirmation, cantab. I did take into account aerobrakes for landers, but I didn't think about aerobraking my mothership (although, that would be a bit tricky to just take away SOME velocity, but not too much). Norpo, that report looks great. Also helped me with a potentially interesting mod - LLL. However, I plan to do this mission without mining resources, so just what I bring with me. Still, thanks for that advice. I might look into Karbonite and Kethane (thanks, klesh) for future missions, though. I'm still open to suggestions about which other mods I should use - cockpit, habitat and maybe propulsion wise (xenon+ ISP).