I do appreciate the response and will keep that in mind for probes, but I ask you, how would I go about building a manned spacecraft capable of landing and returning from eeloo/dres? In terms of mass, it doesn't matter to me, but efficiency is what I care about. I would like to be able to build a manned spacecraft with maximum Delta-V to go just about anywhere in the system and be able to return if possible. I don't really know too much about the advanced maneuvers such as the hohmann and others like it. Am I asking too much? Because no matter what I do I seem to only be able to push out 9-10k Delta-V on a craft that is 350,000 Kg or more and I know that I can do much better, but haven't the slightest clue how to.
EDIT #1: Okay, so I managed to create a craft that has about 10.8k Delta-V, but the weight is about 190,000 as opposed to 350k. I'm started to understand it a bit better than previous attempts.