I think contractors are good at dealing with people who have commitment issues.
We planned on redoing the main bathroom eventually and asked for a quote. We got the quote, with the suggestion that doing the bath at the same time as the kitchen would be cheaper for us and easier for them.
It should be fairly simple. New tile on the floor and walls. New sink and vanity.
We're also told the old tub is cast iron and probably original. And a real pain to remove. It would have to be cut into pieces and hauled out. We will instead just re-glaze the old tub and see how that turns out.