Do you realise that you can also build windmills... where you would put the Power Plant? On Land? And that would reduce the time and cost of construction?
You could also fill barren fields with solar panels and use space that not even a solar plant could use, this in turn also gives animals shade and helps biodiversity and bug species.
And doesnt have a third of its construction cost as running costs forever.
You can also scale wind turbines in minutes. Look at France how much it costs to have nuclear plants not running.
In what way can we reuse the nuclear waste?
Look at France to see how 100% nuclear would have gone.