Stick with the one TimothyC posted for now, that large one messed up as whoever did it used the wrong measurements. Found that our when I was working on my Chinook/NH-90 hybrid.
Realistically, I highly doubt you'd be able to fit 20 people on that ship and have enough resources for them. Orbital mechanics will require you to carry everything you need with you as waypoints in space without a known, stable gravity point like a planet or moon simply does not work. Also, what ty...
Personally, I think going to the internal RHIB holding was a step back. I quite liked it in the open as it gave the ship the feel that the designers wasn't trying to goldplate it over what the Burke has, it had a mission, and it was going to do it.