My wife did that in her early thirties just before her MS diagnosis.

Not to be alarmist but unless you are exaggerating, no mentally or physically healthy human being needs that much sleep.

> On the problem of weight needed to sustain a crew

They say 4 people need 11 tons of food for a 1100 day mission. That’s 2.5 kg per person per day. It looks like this includes water. Water can (and is) recycled in space missions. A lot of food in space is dehydrated (you can buy astronaut ice cream at any science museum, and it’s not that bad). You may get away with only 0.5 kg of solid food per person per day.

If they did the same type of generous estimates elsewhere, then maybe 100 tons would suffice, instead of 300. And 100 tons is how much the Statship is supposed to be able to carry.

You would have to decelerate and then accelerate to dock with each station. It would take more fuel then it would save by a lot. Edit: Alternatively you could accelerate the fuel, but it wouldn't be any better. You also have to worry about getting these stations in orbits that would be useful for the trip. Considering the Earth, Mars, and the stations would all have different orbital velocities around the sun, this wouldn't be an easy task.

who supplies these stations?

I’ve been thinking that FTL might just be truly impossible which is why we don’t see ETs showing up. I know that there are theoretical designs for FTL systems, but so far the details of implementation remain elusive and the energy requirements are enormous… so, could be impossible.

Beyond that, I think humans may eventually colonize the moon, Mars, and the clouds of Venus, but I highly doubt we will make it out of the Solar System before our species dies out.

Edit: I hope to be wrong.