Doesn't do much good to get up there, even cheaply unless you can actually go somewhere, when you want.
We need a for real SHIP.
1. Huge power capacity...100 megawatts.
2. Magnetic shielding.
3. Rotating living work compartments for artificial gravity.
4. Banks and banks of Ion or other drives.
5. 100% closed environmental recycling system,
6. Reusable, excursion vehicle...plant to ship and back again that doesn't need to refueled for the return trip.
Many of these technologies are available or could be with some investment. yes, it IS rocket science, but it's not magic.