Trying to come up with reasonable tonnage?

Sounds okay but might want to ask in science section of yahoo, also ships would be to large in my opinion to inter atmosphere and would have been to big to exit too. Must have been built in space not on any planet. They could dock with each other creating a floating like state or small country in space but would have to have smaller ships to deport to planet. Since ship is so large the ship to go to planet must not be too small, like a ship departing with 200 crew at a time not a ship with three or four pengers. Technology here is much better than to limit it with small numbers but even the future can not over ride certain laws of physics. GL!!! and it sounds really great so far.