I think the answer is to not have an UBI that allows for a comfortable life and then remove the minimum wage.
People will still work if they can, unemployment will go down and those that cant really work for a reason, at least will not live in absolute poverty.
So I would say an initial UBI of $200 and then lower the minimum wage by $200. This will get most people even. But it will make living conditions a little easier for the bottom income segments.
Then we can start raising it up.